Chris Dixon, an entrepreneur and investor, writes about startups, venture capital, pricing software and hiring programmers.
HN links it mainly as a source for startup and investing ideas, such as his MIT post, which commenters compare to a Bill Gates piece.
The article fails to mention that the online storage space itself was considered quite competitive at the time. Yet Drew Houston was able to pull it off.
It's a bigger space than SAT prep, but given the right entrepreneur, either could have been successful.
Chris Dixon had thoughts on this in an earlier posting:
http://cdixon.posterous.com/dropbox-and-why-you-should-invest-in-people
Not that anyone would ever accuse Bill Gates of copying anybody else but this seems pretty similar to what Chris Dixon blogged about a couple of months ago:
http://cdixon.posterous.com/mit-is-a-national-treasure