Sony has managed to lose my trust too. I was a very happy customer of PS1-3, but the retroactive otheros thing has put me right off. I rarely used Linux once I installed it, but that they were willing to retrospectively nuke an advertised feature of their product clearly demonstrated to me that they do not put the customer first. I wouldn't be at all surprised if they do start crippling the PSN for non-paying customers.
The dumbest thing about the OtherOS removal is that it is probably not even going to help. Now that the hypervisor has been cracked enough to obtain memory dumps, it is far more likely that further hacking is going to rely on bugs that are found in the hypervisor software itself. These will probably be reachable by any application running on the system that takes user or network input. Think that every savegame loader is foolproof? How about that dinky web browser? Nuking OtherOS just pissed off loyal customers and bought them very little.