Why? That's how cell phone providers and cable TV providers and ISPs already do it.
The TV, ISP, and phone companies provide ongoing services. I could maybe see paying for ongoing security updates, but not for access to use the software on my own hardware, assuming I was fine with running it without updates.
Wow, I've never heard of any of those websites.
Maybe you're outside of the general demographic that they served. 10-15 years ago, there were few people that I knew between 10 and 20 years of age that didn't visit one or more of those sites occasionally, or at least know of them. In some ways, they filled similar niches to what Youtube videos and smartphone games do now, but in a lower-bandwidth, resolution/device-independent way.
Many of the non-interactive videos can be found on Youtube now, rendered into raster video from the original vector source files. Similarly, most of the game concepts have been replicated in one way or another to various mobile devices.
Optical media, at least the writables we as consumers have access to are completely inadequate for long term storage.
What about something like M-Discs? They're a consumer-available optical medium designed for long-term storage. They require a drive with a higher-powered laser to record, but will read in a standard DVD or Blu-ray drive. Of course, their "1000 years of storage" can't really be tested, but the idea of using an inorganic data layer seems like an improvement, and the discs passed some kind of DoD reliability testing.
"Engineering without management is art." -- Jeff Johnson