People have been buying stars for hundreds of dollars for decades now. People have been buying penny stocks for decades. People are buying Ty Beanie Babies again. The list goes on and on. As long as you can make SOMETHING that people will pay money for, there will be scams to create the money. That doesn’t mean the objects used in the scam have value, and certainly something lasting 7 years is not proof it’s “here to stay.”
The dot-com craze to bubble to crash occurred in about 7.5-8 years, and you know that, because you were around for it too 
