Watch TV from the 90s and earlier

I'm surprised there aren't more full tapings of 90's television available, as in entire blocks of broadcasting with all the commercials intact. That was how most recording would have happened, and with the start of TV Land the networks should have been able to predict there'd be a market for it in 30 years.

Storage was a problem back then.

Not really. Hoarders were already mass recording TV from home, see https://en.wikipedia.org/wiki/Marion_Stokes

Recording ~5 hours of television a night would have been a trivial cost for a network like NBC. Particularly compared to the licensing fees those hours would have had.

I'm working to digitize some old VHS tapes. It's not as easy as it sounds.

You've quite a few barriers to getting that stuff online.

1. Sure, someone taped 6 hours onto a junk tape of TV from some channel to catch one show. But then they likely taped over that, again and again.

2. Tapes are bulky. VHS in general and junk tapes in particular would have been viewed by most people as low value junk that was tempting to disposed of. That's especially true during the decade or two before nostalgia and retro-cool starts making old junk more desirable.

3. Tapes degrade. Even if someone kept them, they might not be readable and/or gum up the VCR you're trying to use to read them.

4. VHS digitization equipment is also old. Apparently newer capture cards aren't very good compared to older ones, and there are specialized devices to fix signal errors (TBCs), allowing capture cards to actually work, that are becoming hard to find and expensive.

5. It takes a lot of time. VCRs play tapes at 1x speed. So if you want to digitize a 6 hour tape, it's going to take at least 6 hours.