> web/internet in 90s and smartphones in late 2000s. Back in those times, the tech industry was far, far smaller
> huge parts of people's lives are mediated by one of a half dozen companies
The latter point is doing a lot of heavy lifting because the first point is whitewashing history. Back in the 90's, you had exactly one cable TV provider, one phone provider, maybe one or two cell phone providers if you could afford one, and your internet options were limited to either your cable TV provider or your landline phone provider for DSL, or AOL if you were really unfortunate.
You probably had one trash / sanitation provider, one choice of place to send your kids to school (unless you went the religious school route or could afford a private school, assuming one was nearby). You had one option for getting your mail delivered. One choice for policing, for fire protection and other emergency services, etc. Having only a few options has been a pretty big part of a lot of daily life.
The internet felt more wild and free, because there weren't too many places to go, and most people didn't go there. The internet didn't shrink, but people who started going online went all went to the same places, so all the growth went... where people actually wanted to go.
Well, the 90s were a time of liberalization/deregulation so definitely a moving target, but the monopolies/layer of mediation were held back by variety cultural, regulatory and legislative checks. Glass-Steagall was repealed in '99, fairness doctorine was repealed in '87, but the mindset and expectations remained in place, the idea of Citizens United would have been considered absurd, agencies had stronger regulations, etc etc. Today you have a handful of people who control these companies (non voting shares) paying money directly to the president in return for preferential access. Laws and the public interest are not a part of any consideration.
Here's a practical example: your gmail account today is probably more important to you than your phone number was in the 90s and you can run afoul of some random ML subsystem and lose access. There is no recourse or accountability. Randomly loosing your phone number and not having recourse was not a thing back then.
But yes, I was on the internet in the 90s, the little playground we fled to has grown into a terrible panopticon run by unaccountable people for their own personal interest. NIMBY DC opposition is a terrible proxy to tackle this, but it may be the only tool available.