I have no idea how well it works in reality, but I can imagine the Lifetime Pass being a good business model for them: only the most enthusiastic user will pay for 3 years up front (lifetime currently costs 3x the yearly). So when they get a Lifetime pass they’re getting 3 years paid up front and an evangelist who will probably tell their friends about Plex. If that Lifetime subscriber gets even one person to sign up for a yearly sub who otherwise wouldn’t have, then Plex came out ahead.

Sure, I’m not saying Plex has to do a single-payment model. Just that it’s a think that’s been done successfully (and for longer than Plex has existed). Everyone’s pushing subscription models so hard that it’s easy to think “this is the only possible way that anything can work”.

I like my Shield TV: https://www.nvidia.com/en-us/shield/shield-tv/

I did need to install a custom launcher on it when the standard AndroidTV launcher added ads.

Lots of businesses have and do exist without a subscription model. I’m fond of the Paprika Recipe Manager, for example, which asks a one-time payment for each major version. All commercial software worked this way in the 80s.