Agreed. He is incredibly unlikely to pursue anyone and has actually given a few of the knockoffs his blessing. You're wrong on one point though...the $50k/day isn't going anywhere. The ads are still active on 100M+ installs. He is still raking in cash and will until people stop opening the game on their devices.
My stance on this particular matter is that he has done everything short of open sourcing this game, up to and including giving his blessing to several knockoffs. 100M+ people have the original game, and that game is still generating substantial revenue for him. Everyone that already had the game when he pulled it is likely sticking to playing the original. I'm not making a Flappy Bird clone, but I think that those who are probably aren't going to be facing any lawsuits. That's all I said.
