It takes time to generate good homebrew. It doesn't take nearly as long to pirate software.
You shouldn't support Sony because they brought this entirely upon themselves. They removed a console feature that the hackers, specifically, paid for. The entire reason most of them purchased a PS3 in the first place was because OtherOS gave them access to far more processing power (at the time) than they could purchase in a PC for the same price.
None of the involved parties, just like the original PSP homebrew community, are interested in piracy. They do know that they've opened that door, but they don't care - the DRM was simply a roadblock, to regaining the features they had already paid for, that they were forced to bypass in order to keep other features of the console up to date.
Had Sony not placed that roadblock, the individuals with the knowledge to bypass it never would have bothered.
To give you another example:
Imagine, if you will, that you have an entirely software-controlled vehicle (which is not much of a stretch, really). You've purchased the vehicle with the understanding that it has a climate control system and radio. Now imagine that, several years later, the company which sold you the car decides that they're no longer going to allow you to access the air conditioning, nor are they going to allow you to listen to the radio - because they feel that those features use too much energy, are slightly reducing gas mileage, and are making the company look bad.
Are you going to care that, in order to bypass the system and regain access to the air conditioning and radio, you'll also have to bypass the limiter that prevents the car from doing 200mph?