This horrible obsession with exponential growth. It's not enough to maintain a core team of engineers and pass on those savings on the price in order to gain more customers.
I completely agree with your sentiment, but it puts the company in a difficult position when your competition offers similar functionality for "free" (because you already paid for Office or their primary revenue model is different).
I would guess security is a huge part of dropbox and you’re never “done” there. The first dropbox-like that gets breached can say good bye to their spot on the market.