I think they will never give us back otherOS feature because they don't care. People will always try to hack hardware, just because they like to and some people will try to make profit selling piracy games, jailbreaks, etc.
But Sony and game companies are trying to keep their profit in games, it's their business and I agree with that but not allowing people to try to hack the devices will not stop the profit loss. They don't learn from past lessons, if Sony keeps the game's price low, will have less piracy.
Why I pay 60 bucks for a new Need for Speed, as I can buy the old one as low as 20usd ? I don't like to buy new releases because this. I do prefer buy 3 original good games at 20usd each than buy one at 60usd. I own 15 PS3 games. In my country, they sell God of War 3 for about 110usd. I bought mine in Hong Kong and paid only 45usd. It's the only game I have paid more than 25usd and I think it's worth each cent.
Keep PS3 games prices low, Sony and Game Studios will sell more, people will not care too much about hacking, they will prefer to buy new games, more than used games. Be smart, Sony.