Learn the lessons time and experience teaches you (Score 1)

You say yourself that Bill Gates once made the same mistake, and still you persist in your oppinion.

Whatever resources we can only dream of having now, in 10 years it won't be enough.

And even only from a PR standpoint, it is a good thing. Not too long ago Microsoft put up a page with 'Linux myths' on their site, trying to take the wind out of Linux's sails. One ot it's arguements was that, because Linux could address a smaller ammount of memory then Windows NT, it was less suited for an enterprise environment.

If Linux supports more memory then you'll ever need at that time, it shows that the Linux movement is committed to support even the most extreme and demanding applications, which is a good thing.

If there is room for improvement, use it. Limiting yourself will only hurt you later.