I've bought cars and houses and never had a problem. If I had enough money I could buy yachts, or airplanes, or entire companies. All of this could be done with

I've bought cars and houses and never had a problem. If I had enough money I could buy yachts, or airplanes, or entire companies. All of this could be done with the systems we have today. I cannot think of anything that is for sale that could not be purchased with dollars, if I had enough dollars. What problem does crypto really solve?