You have no idea that it was
You have no idea that it was not a sustainable business, this is you talking out your rear end.
You also are not stating what happened truthfully, or are perhaps ignorant. There was a contract and clearly it said GM could veto if a certain amount was sold to another company (it was 20% or over). The latest deal fulfilled the legal contract to the T, setting up a collaboration with Youngman until GM IP could be worked out of the current lineup. This was reasonable and a compromise. GM stated that ANY investment with a Chinese company, they would veto it. They knew it was against their own contract, but were going to force SAAB into court basically to fight them. This is dirty, disgusting, and will be remembered for a long time, not just by SAAB enthusiasts, but by the motor industry. You have no clue what other entities think of GM's behavior in this regard, and goes to show just how very wrong you are.
Old GM and New GM are the same discussing culture, and their karma will bring them down one more time -- and next time they will go to hell, where they should have been in 2009. This is the company that destroyed the street cars in the US, killed the EV1 when people were begging to buy them off of them before being crushed, the company that has destroyed brands left and right. Any enthusiast of this company is quite literally a moron.