> [Uri Levine] decided not to join the ranks of his famous acquirer

I think that means he was not acqui-hired. He didn't work for Google after the sale. He just took his money and moved on. Lots of employees of acquired companies don't join their acquirer for one reason or another. I suppose that can work for founders too. I've read of a few founders that were disappointed once they were acqui-hired because they lost control of something they had built... but still have to work on it.