I've seen it happen a few times around me and while people usually get annoyed it's not a big deal, especially if it happens quickly. We hired a machine learni

I've seen it happen a few times around me and while people usually get annoyed it's not a big deal, especially if it happens quickly. We hired a machine learning guy from Facebook and he up and quit in less than 2 weeks, because his buddies finally landed a series A and he wanted to work for them. We were all annoyed, but I wouldn't bad mouth him to anyone.