If something did go wrong as you suggested... it would not have benefited them in any way to stop coming here, because people tend to turn to the platform where there are the most users to complain about problems with services and sites.
We have seen several threads where people lash out against casinos in the past, when they feel cheated. Stake.com can also not hide from this forums scam accusation section, if they do anything wrong.
https://bitcointalk.org/index.php?board=83.0Stake does not need to do any wrong as they are an established site. New sites look for cheap things to get money but the trusted sites never spoil their reputation.
Stake will reach to that high level sportsbook one day. Do not worry about it today because let's be honest they are still brand new and they have all the other things they have to worry about so they couldn't put 100% into sportsbook. The difference between stake and other places is that other places do not have all of this at once, stake does.
It means they are not going to be able to invest all their efforts into just sportsbook. Sure they have troubles now but that doesn't mean they are not aware of it, they are quite aware of it and will work towards fixing it. Specially the live game bugs, they are horrible and hurts them as well, don't you think they will try to fix something that causes them to lose money as well? Obviously they will want to fix it so they can make more profits as well.