It's 160 characters, not 150.

It doesn't matter to Netflix, it matters to media companies, and if you want to make their content available you have to play by their rules. Arguably also, it is about the common barrier. Nothing you do will ever make it 100% secure, but if you get the threshold high enough most casual users will not bother.

That's not the point really. Entertainment is something that is hard to fulfill with the next best thing. Yeah yeah, people could probably get the same entertainment value from some other movie, game or music. But in the real world, when one wants to see thing x, he or she wants to see exactly that and not pick something else.

No. There isn't one because Linux market share on desktop is so incredibly small that no one wants to put up with the cost of supporting those few users. Most normal people run either Windows, set-top box or some console like PS3. Even if someone were to make such service they would immediately get huge backslash for the need of DRM (demanded by copyright owners). Yes, continue to use Linux, I do too. But if you are not willing to come even a little bit forward (like, accepting DRM or closed binaries) don't cry about it when companies don't want to support it.