Fortunately a good chunk of this entrenched, existing technology is open source, especially in the server market. And the GPLv3 closes a lot of loopholes that h

Fortunately a good chunk of this entrenched, existing technology is open source, especially in the server market. And the GPLv3 closes a lot of loopholes that hardware manufacturers might have used to achieve that lock-in anyway. I agree with your basic point that the Web is one of the most open "platforms" we have, but I think the dire prognostications for the others are too pessimistic.