It may happen sooner than you think, maybe within 10 years, but then ask yourself what you can buy with USD 1m in such a situation. Probably about the same as 1 -2k buys today, maybe 10k if your lucky ;-)

Another important point is that for BTC to flourish it needs liquidity and distribution and to be used as a medium of exchange, so all those saying they will hoard are actually holding yourselves back.