I'm wondering how soon until we see OSX being jailbroken.

I suspect system level choices like this are bound to continue in order to push users in the direction of iCloud and AppStore usage (ie. vendor lock-in).

Though such moves appear draconian from our perspective, I believe Apple times such moves around when some internal metrics indicate a tipping point has happened, namely the developer backlash won't be substantial enough to affect Apple's bottom line.

It's only a matter of time before the iPhone dev team puts some effort towards serving the OSX crowd that wants to jump ship but not give up "OSX" completely.