Most of business is just marketing. Are Air Jordan shoes really worth $200? No it only takes a few dollars to make each pair but all the value comes from advertising.
You're really, really comparing apples and oranges here.
Most of business isn't conducting on marketing/ or gambling, but instead has some fundamental basis for it.
--" Is the marketcap of Shell really 235B $ - yes, they have 388 bil $ worth of revenue each year."
Good technology driven crypto projects will get nowhere without marketing. Justin Sun isn't a technical genius but he knows how to create hype around tron.
Thus far you're right, still though, i really hope this isn't going to be the case going forward.