Some of the whales might be possible to free. But, the freed Keiko and he sought out humans. This caused him to linger where he shouldn't and he died of pneumonia. He was a sweet whale and never hurt anyone.
Tilly has killed three people. He can't be let free to seek humans if he gets the notion to... and he even liked Dawn. You can tell he did. He just has a temper and he's so strong.
There is a whale Lolita, she's from the waters off Washington State. She's kind of old (40 or so), but. her mother is alive. She's very gentle. Some people want to free her. They said they would watch over her and feed her (if need be). But, she is all the way in Miami now... still, if there was a way to move her with her mom out there maybe she'd be o.k.
ETA...
I don't know the best solution. I am worried if Tilly seeks humans then kills one, orcas might get blamed or hurt.