Re: The end of innocence
The Internet isn't changing, you've just finally become aware of what is has been for over 2 decades. Probably since it moved from an academic only platform to the general public, it has been a commercial enterprise. Amazon launched in '94. eBay moved from 'sell stuff you don't need' to stores a long, long time ago. I rarely buy anything used there anymore.
If you want to create your own web space, you can still use a web host or dynamic DNS. Most people prefer the ease of Facebook or Instagram. The only business model for public web sites that seems to succeed is free content with advertising. As such, there is going to be a battle over what the appropriate amount of advertising is going to be.