What’s the best way to invest in Blockchain technology itself? (

As my title implies, how can one invest in Blockchain technology itself? Or what’s the best way? I understand BTC, ETH, NANO, etc are Blockchain based, as with all tokens, but don’t they basically serve the same purpose (to transfer fiat)? I mean some may be centralized/anonymous/faster/cheaper etc, but in the end doesn’t blockchain work to achieve the same goal?

Everyone talks about how the majority of tokens will die, and the stronger ones will make it, and I’ve heard it compared to the .com bubble (which seems pretty accurate). So is It just a crapshoot in investing in the right coins (similar to say, investing in eBay/Amazon during the .com bubble)?

TL;DR Is Blockchain the same is the .com bubble where it’s just a crapshoot to find the right coins?