Earlier quoted context omitted.
If you aren’t affiliated with a university, scientific papers cost something like $30/each to read. If papers can be accessed for free, then the only expense required to follow cutting edge science is time, and everyone with an internet connection can join in. At $30/paper, suddenly only the rich (or those with rich patrons, such as tenured professors at rich universities) can afford to play. Researching a topic, it’…
There is another solution - interlibrary loan. While it takes longer, you can often get papers for free or for a flat nominal cost. The local college ILL service will make a copy of any article in the world for $10 for the general public. The public library where I used to live would make ILL copies for free. It's not a great solution, but if you have more time than money, it's a possible alternative.
Most people in academia have neither.