This is pure fantasy. Cable did not have everything in one place for cheaper. Unless you paid extra you only had the default channels where you had to watch everything at a specific time or pay extra for a PVR to record and even then you didn't have access to entire backlogs of TV shows. If you wanted to watch front to back a show you had to pay $100+ for the box set.
Also ADs ADs ADs ADs ADs ADs.
Yeah streaming is getting worse and worse but if you told me I had to choose between cable and a single streaming service I'd pick the streaming service every time.
Streaming is still leagues ahead of cable. Don't sub to all of them at once (you can only watch one at a time anyways), plus I bet even the ones with ads are still way lighter on them than cable is.
Plus, as long as these channels don't replace on demand selection, they don't make anything worse. It's just a new way to use the streaming service.