As a follow up to my previous posting, here are all the possible outcomes of a founding CEO replacement. Imagine you have three coins you can flip. The first coin has "stays/leaves" on its sides, the second "keeps old title/gets new title", and the third coin "friendly/unfriendly". Toss all three coins, and look at the results.
1 - Stays/keeps old title/friendly
This is what the founder AND the investors really want, but as you know, sometimes the founder CEO really has to be replaced.