Unfortunately, I don’t see Linux ever gaining widespread adoption. Not for general desktop use.
In order for that to happen, Linux would have to gain enough market share to actually be a threat to Microsoft’s business, and when that happens, Microsoft is going to respond one of two ways: actually making their products more appealing, and regain their lost share, or (far more likely) REALLY ramp up their efforts to suppress Linux’s growth. And I don’t think Linux has the strength to withstand the full weight of Microsoft’s legal and financial power.
Crazily enough, MLB has actually taken a big step in the RIGHT direction this year: it’s launched a new service for many teams where you can get access to just that team’s games, directly from MLB, without blackout restrictions.