Actually, I was on a big software company's internal mailing lists, where everyone thought Steve Jobs had gone off the deep end if he thought web apps would be able to compete - the tech is just not there.
There is a reason why Google Apps (Google's web based office suite) hasn't taken over the world - that reason is MS Office.
And Safari is nice, but FF is faster for me. I just like the polished look that Safari has, but that is all. And 2 hours to break is just too bad even for a Beta.