The result is the same. It is estimated that 4% of investor addresses owns 95% of cryptocurrencies in circulation. Think about how scary that is, vast majority of market capitalization and value comes from those 96% of investors, and yet they collectively only hold less than 5% of coins. You're asking to be taken advantage of, since those 4% determines when they crash the market once they decide to cash out. They can pump and dump you anytime they want, and you'll be left holding the bag of fool's gold.
Also, the companies that survived the Dot Com Bubble actually produced goods or services. Amazon is a e-commerce giant. Microsoft produces operating systems. IBM produces servers and computers. CISCO produces network hardware. We practically need Google's services for every aspect of our lives. The stocks of these companies are valued based on their predicted future cash flow, and owning their stocks means you now own part of the company. Owning stocks also give you quarterly dividend payout from corporate profit.
What does Bitcoin or Ethereum produce? Nothing. There is no future revenue stream as there is no service or product. The only thing providing value is how much the next guy is willing to put in. Both failed miserably as currency as they are too volatile, lack scalability and are not widely accepted. They're speculative commodities, nothing more. You buy them in the hopes that its value will go up, which is ironically contradictory to what a currency should aim for.
The unrealized potential is in blockchain, not coins that spawn from it. Usually you purchase stocks in companies that develops such technologies, but right now in this speculative climate it's actually choking innovation as people rush to buy a byproduct.
https://techcrunch.com/2018/01/07/the-cryptocurrency-bubble-is-strangling-innovation/