> It's not necessarily badIt is necessarily bad if you make yourself (or, more important) your business totally dependent on somebody who is a monopoly supplier.
> doesn't mean that philosophy failed, and the recent resurgence of Macs has proven as much.
I think all the proprietary systems failed, and there were dozens if not hundreds of them. Apple was the only significant survivor, mainly for pseudo-religious reasons.
The only areas where proprietary systems survived are in mainframes (perpetuation of IBM monopoly) and in games consoles (where hardware can be sold at a loss).
If the IBM PC had died, the world of CP/M would have continued....
> the recent resurgence of Macs has proven as much
Not really. The recent resurgence is mainly due to the fact that its lack of serious and/or business software is not the barrier it was when (a) most people can do most things online and (b) it has Unix underneath.