I am pretty sure that those people who said that wouldn't even buy it when it reach that price because they would say again that they are waiting for a lower amount. If you wanted to buy it then buy it for a price that is likely to be reach in the future. Sometimes this people are the nocoiners who weren't able to buy when bitcoin is at a lower price and they would bash bitcoin when it increase in price. Maybe they are glad that they didn't bought bitcoin now because it is stalling in price and saying that bitcoin would be worthless in the future but when it increase, they would say it is a bubble. No use convincing those kind of people because they would not buy now but later on, they would just regret that they didn't have a firm decision about it.