There is something called greater fool theory that applies to basically any speculative investment. When speculating you buy something with the sole purpose to resell to someone at a greater price.
Well, for one thing, business only happens if a party thinks it is going to win, right? I think that it implies that someone has to lose because money/value is not unlimited.
The way I try to not be the "greater fool" is by trying to buy stuff as cheap as possible. I started buying HIVE again only when it was on the lowest lows at around $0.20 and have been carrying it all the way here. I bought it again at $1.50 but to "carry", but to buy Punks on Hive (an NFT collection on Hive Engine!).
Well, then wouldn't I carry the risk of being the greater fool buying JPG? Well, possibly yes, there is always the possibility to lose it all. But I am buying only the cheapest of the cheapest punks!
Punks on Hive were launched and could be minted for around 20 HIVE each. I didn't have any money nor liquid HIVE to mint them at launch, but I have it now. So I will keep buying all the cheap ones in an attempt to not become the greater fool.
Of course, I could also be a fool for buying the cheap ones, since there are people making a lot of money by trading the rarest punk NFTs, but I don't have the resources nor the guts to blow thousands of dollars on that at once. Maybe I will end up spending thousands on those NFTs, but by buying the cheapest ones.