Aye, it’s pretty uncommon these days to find Wi-Fi that doesn’t just work out of the box. Can indeed happen on occasion though. Usually if there’s no wiki entry on the issue, the community is pretty good about helping out.
I would definitely give it another go. I’ve been daily driving for about a decade now - I didn’t personally have any issues back then other than some games being pita or not working at all with WINE. But Linux gaming has made huge steps in recent years.
Technically I still duel boot and have always done (for just in case) but I can’t even remember the last time I booted into Windows.
Not entirely their call. I have little sympathy for the likes of Sony, Samsung et al but they’re also beholden to the entertainment industry which is very VERY pro-DRM (and the like). Open Source standards will make it much harder to lock down TVs and make it easier to pirate shit (or, you know, actually fully own your TV and do whatever the fuck you want with it). They won’t be dropping those ‘calls’ any time soon, not unless pissing off the entertainment industry worked out as more profit.