Bcnext asked for 21 btc for the lot and he got the 21 btc and consequently closed the IPO. if he had carried on selling nxt coins even past the 21 btc goal he would have screwed the ones who had invested thinking the 21 btc would buy the whole pie. for example if someone had invested 1btc thinking he would get around 450k of nxt....selling nxt even past 21 btc it would have screwed that investor as his share would be much less than what he had agreed into.
Care to show where exactly BCNext asked for 21 BTC? From what I see, the fundraiser was abruptly and unexpectedly cut in the middle, with interested investors left overboard, having to buy in later on much higher valuation (which contributed to explosive speculative growth).
After this case, I much support and prefer any public project with clear and well communicated deadlines.