The code repos were never in danger, and they've been killing it in the market because they are racing to add awesome extra features, not racin to the bottom.
I don't disagree that they can do more in their db operations, and that it's fine for us paying customers to demand more, but the reality of startups is that it very much is a race and features, for availability or recovery or other, are viciously prioritized and many things don't happen until something breaks.
If you don't thing Github cuts the mustard, svn on Google Code probably won't have problems like this...
Disclaimer: I'm personal friends with much of the Github crew.