Unfortunately I can still see this takeover happening... eventually.
Maybe 2-3 years down the line. And the takeover itself would still take over a year to formalise/complete.
So this has definitely given me a bit more ambition to get Zimbra in!
I've really wanted to switch to Zimbra, but we've got budget issues at the moment. I'd want to buy new hardware for Zimbra to live on

But this definitely puts Zimbra back on the map for us, right in pole position!
We actually want the Network Pro edition with the Zimbra Mobile stuff though, which is all the juicy closed-source stuff for ActiveSync etc.
I would like to see the open-source licenses revised and "made safe" for the future though, as the work that's gone in to Zimbra is too good to lose.