You misunderstand why I brought up him being from Xamarin.

The initial conversation was about how Nat was likely leaving because his contract ran out. The counterpoint was that he was from the Microsoft side and therefore he didn't have a retention contract. I brought up Xamarin because he was likely under a retention contract from that acquisition.

That being said, these contracts probably had little to no effect on his decision though, as I'm sure he would have made more money than he could spend in a lifetime regardless of whether he had stayed or not.

> I brought up Xamarin because he was likely under a retention contract from that acquisition.

Microsoft bought Xamarin in February 2016. I'm sure five-year retention contracts are possible, but that seems extraordinarily long; I've rarely seen longer than two years.