A company that actually produces real-world products like Sony has things like PS5's, TV's, music equipment, music/movies/television content, etc. that hold up the value. Every time a Sony product sells, the stockholders make money. When that next generation of Playstation consoles are about to release, are you really going to sell your stock if it's showing game-changing tech and a catalog of games people are looking forward to playing?
Crypto is funny in comparison. All these coins can potentially go to zero because the only thing holding up the prices is a community either shouting "Paper hands!" or "SELLERS GET REKT!"
No real world product behind it - the only product is really the coin itself.
So there is nothing holding up crypto besides it's community/holders - as long as they don't sell. That's why it's all hype and speculation and why a coin can go from a billion dollars of market cap to zero ($gm). Crypto is practically a ponzi but the difference is that it can keep on generating more ponzis. So that means yet another opportunity to get on something if you missed the last wave. Unfortunately, that leaves you open to all the scams/rug pulls.
Nonetheless, new coins/ERC-20 tokens keep popping up giving people a new chance to make some money. Now you have other Layer 1 coins like Cardano, Solana, etc. that have smart contracts of their own now meaning more new projects for people to try to "be first" into. But they're all the same: some new dex, a new wallet, some oracle, etc. Basically more ways to buy the coin.
I can't point to one thing in my house that's a blockchain product. It's been 8-9 years (inexcusable for tech) and $3 trillion dollars (a fortune for most companies to work with) to produce something useful in my house that I can say: that's blockchain right there. But nope. Real companies do much more with less funding and in less time. I won't even get into anything specific but look at what tech looked like in 2013: do you remember what your phones and cameras look like back then? Things like augmented reality, many A.I systems, self-driving cars, hubs (like Alexa), etc. weren't even around then. Even non-hardware: Discord, Zoom and Slack were post 2017 tech and absolute game changers that are used in nearly every household around the world. All this is what real tech progress looks like. Roku has roughly a $50 billion market cap: I can use it in my house, bring it to another tv when I travel then use it there with my favorite settings and have access to nearly every single piece of streaming online content around the world. It even replaces cable.
In comparison, at some point in 2021 I think Avalanche had a $50 billion market cap and Solana as well as Cardano were at over $100 billion market cap - doing what exactly?!
Remember those terminators / robot dogs from Boston Dynamics dancing around, doing flips, etc? Hyundai bought that company for $1 billion but Avalance is worth $21 billion - doing what exactly? I know for sure it wasn't 21 times more advanced than Boston Dynamics's tech.
At the end of the day cryptocurrency's best real-world use case is sending money around the world (or buying things) and you can do that with any one of these coins. The other 100,000 different coins are mainly more ponzis built because people missed the boat the first time or they're flipping and the people who launched the coins are taking advantage of fomo before they themselves dump the coin on those who got in late.
So really, people can still make plenty of money with cryptocurrency - because that's the ponzi nature of the space so that's why money is going into it.