>Pick a language that has limited programmers, bring programmers from around the country, pay them well beyond 6 figures so they don't leave and have a crisis every time a programmer leaves.

OR

>Go with a mainstream language that they teach every CS kid and has every googable question imaginable in SO, hire 1 experienced programmer to manage a bunch of post-college-kids.

There are lots of good reasons to pick a language with a strong community. Once in a while, I hear people recommend obscure languages(or up-and-coming), and I think- that is going to be expensive to maintain.