on planet earth system works in this way - 90% of whole people are poor and supporting 10% wealthy.
it is impossible for 10% to be poor and 90% wealthy, this would bring value of money down and again would benefit only 10% that are the richest.
or you think majority of people on planet earth can be rich in a couple of years from now and live happily ever after, most people owning yachts, expensive cars big houses? Where would you build so many houses for every rich person and who would build the houses if most people were rich?
There are some expensive products to buy if the BTC price will hit $250,000: cars, jets, mansions, yachts, jewelry, cloths etc.
You will need at least 10 BTC / person to have these.
Don't worry, the "Bitcoin Milionaires" will be just regular persons who improved their life by holding and selling BTC. Very few of them will be rich (Winklevoss, Karpeles) like Rockefeller / B.Gates etc
And because Bitcoin it is limited to 21 mil coins, and not all these coins will be mined in our lifetime because of the diff., and many more BTC are "lost" by the people who damaged their "cold storage" / lost passwords etc., I dare to say: Bitcoin it is scarce and this will make it more valuable.