Apple Thoughts: OS X Lion Via The Mac App Store

"Next time you install OS X? You'll be slurping it down through the Mac App Store, not loading it up through an optical disc like some sort of caveman."

I doubt anyone is shocked by this. Makes me wonder though, with some data capped plans, if this eventually will be an expensive route to go if you do a lot of updates. I guess you will have to get good at budgeting your online time if you do deal with limits. What are your thoughts? Do you think this is potentially a problem?