There are still some other hurdles. GIMP isn’t as good as Photoshop (at least that’s what the Photoshop-users keep telling me,) Kdenlive isn’t as good as Premiere, etc. There are still market segments where switching to Linux is unfeasible. However, gaming is a pretty big segment in itself, and it is becoming feasible for many of those users to switch to Linux (with the main exception being people who play games with kernel-level anticheat.)

This creates a snowball effect since as more people switch to Linux it creates incentive for software and hardware makers to provide Linux support, which will allow more people to switch to Linux, etc.

Gaming isn’t the last hurdle, but it’s a very important one.