Earlier quoted context omitted.
How many successful open-source platforms are there? I can't think of any. Unlike Free software, platforms have a maintenance cost (servers), and that cost cannot be paid by donated man-hours. The only thing close that I can think of is BitTorrent due to the distrubuted infrastructure, but that's quite impractical to duplicate in this context (how can browsing the content contribute back to hosting and storage automa…
There are many. Email is a particularly notable example. Luckily, the technology sector wasn't run by "entrepreneurs" back when email was invented, or we would have wound up with walled gardens there too (Hotmail users can only email other Hotmail users and contacts can't be exported, etc).
Most of the UKs email over uucp came in via the ukc gateway and IIRC I think I was charged something like 4p/1K for email that was international at that point. From memory my usenet feed came via a US bank in the City and was over a telebit trailblazer modem.
By 1990 I'm pretty sure that cix,MCIMail and Compuserve all at least had gateways to SMTP mail and within a few years it all became more more transparent and free.