TL;DR Microsoft tried to leverage its desktop monopoly to become a browser monopoly to a server monopoly and thus own and tax and sanitize the early web, we wuz saved by Firefox.
The web freedoms we are losing today were hard won.
Back when browser choice was NCSA Mosaic or Netscape , Microsoft was ignoring the web as a fad - Gates thought little of it then - sounds crazy now but in the early 90's, before access was readily available outside Universities, BBS was dominant for the public.
The web was small then: registering a domain was altering a text file (no cost); SPAM didn't exist, every email was answered; all very university nice nice; ecommerce wasn't a thing.
Microsoft 'awoke' to the webs potential and gave away Internet Explorer for free ( Netscape's browser cost money to buy unless you used the latest beta ) - this is what the antitrust case of win95 was about - Microsoft leveraging it's monopoly ( no Linux back then ) to aquire browser share.
Why was this seen as a problem ?
Because of Microsoft's strategy of embrace , extend , extinguish.
It was feared Microsoft browsers would only talk 'properly' to Microsoft servers ( the server market was the 'big' money ) - thus Microsoft would dictate the web rather than Berners-Lee's democratic W3C.
Everone else would be shut out of spec by dint of Microsoft end user browser monopoly leveraged from it's Desktop monopoly.
This would certainly have slowed adoption as every site and every server would have to pay Microsoft's large costs - 1 server per site then so the Microsoft tax was then ~$2000, recurring, per site.
Then only way to compete with the behometh of Microsoft's developers & emerging browser monopoly was the Free (GPL) development model - Netscape gave away their whole browser business to the public domain, inspired by Eric Raymond's analysis of the power of the public domain to attract developers - "The Cathedral and the Bazaar".
Raymond argued that ensuring developer contributions couldn't be locked away by proprietry companies would attract developers. This had happened before with UNIX, necessitating GNU & LINUX.
The GPL, the Free software license of Richard Stallman's GNU toolchain, adopted by Torvalds for LINUX, was the model for a public domain that avoided the 'tragedy of the commons'.
The GPL ensured the 4 freedoms remained intact on downstream contributions.
Free GNU software meant basically: if you improve public code, you must give the source code of improvements back to the public domain.
Free Firefox ( in freedom & price ) coupled with the LINUX kernel (or BSD) and the GNU toolchain provided a Free server OS. With A Patchy Server ( renamed Apache ) this provided a way for the web to grow unencumbered.
They had to dilute Free by calling it Open Source as some business types feared Free (as in beer) & Freedom - but it was Stallman's GPL in all but name.
Imagine a building filled with floors of rackservers , if every server, every OS was forced to pay Microsoft rates - and perhaps also be content Microsoft didn't disapprove of.
Microsoft licenses in a Monopoly market - the web would have been strangled at birth.
Only for the wealthy and approvable - basically Encarterised.
Lillywhite rather than everything and everyone.
So the GNU toolchain and license, and LINUX kernel and (GPLed) Apache server meant that building of servers could be had for the price of traing staff - zero cost of entry, everyone gets to play.
A server farm could be set up by a devotee in a cupboard for zero cost rather than ~$2000 per site, ~yearly to Microsoft.
This is why Stallman is the granfather of all our freedoms.
He saw UNIX stolen and LISP crushed by and invented GNU Free toolchain early enough (80's) to have it useable to write the LINUX kernel and be a complete Operating System by the 90's.
The truth of the crappiness of the Microsoft web vision became the nightmare of late 90's early 00's web devs having to write for IE6 bizzaro HTML.
Yes the W3C became stagnant later and Mozilla support of legacy httprequest allowed modern web to AJAX, etc, HTML5 blah, etc, continual revolution.
Early public web culture was very BBS anarcho, democractic rules not central power - the public had after all built a functional web and email system without oversight or control - distrubuted over phone lines in the 1980's (q.v. FIDONet & BBS) before the gov & universities 'shared' TCP/IP. All early non-uni ISP's were BBS's.
Arguably the tie-down of broadband and 'mistrust thy neighbours surfing' crushed sharing access & many early freedoms & the anonimity of temporary copper dialup net & webbery ( crypto was an illegal munition then ).
If the web had failed, then we would be living in an info desert like the 1980s, where most people relied on newspapers & official propaganda was absolute.
Without the web Rupert Murdoch would now be absolute kingmaker and dissent to the big lies of authority would be absent without the blogosphere.
The freedoms we are losing today were hard won.
[ * ] sources, my greybeard.
[ ] references :
Jason's Scott's BBS documentary ep4 FIDONet
https://www.youtube.com/watch?v=_Cm6EFYktRQ
"Revolution OS" - rise of Open Source
https://www.youtube.com/watch?v=jw8K460vx1c
Yes Bill Gates is super nice now but he was ruthless to get there.