Building LLMs is probably not going be a brilliant business
In the 1960s, airlines were The Future. That is why old films have so many swish shots of airports in them. Airlines though, turned out to be an unavoidably rubbish business. I've flown on loads of airlines that have gone bust: Monarch, WOW Air, Thomas Cook, Flybmi, Zoom. And those are all busts from before coronavirus - times change but being an airline is always a bad idea.
That's odd, because other businesses, even ones which seem really stupid, are much more profitable. Selling fizzy drinks is, surprisingly, an amazing business. Perhaps the best. Coca-Cola's return on equity has rarely fallen below 30% in any given year. That seems very unfair because being an airline is hard work but making coke is pretty easy. It's even more galling because Coca-Cola don't actually make the coke themselves - that is outsourced to "bottling companies". They literally just sell it.
If you were to believe LinkedIn you would think a great business is made with efficiency, hard work, innovation or some other intrinsic reason to do with how hardworking, or clever, the people in the business are. That simply is not the case.
What makes a good business is industry structure
Classically, there are five basic parts ("forces") to a company's position:
The power of their suppliers to increase their prices
The power of their buyers to reduce your prices
The strength of direct competitors
The threat of any new entrants
The threat of substitutes
It's industry structure that makes a business profitable or not. Not efficiency, not hard work and not innovation.
If none of the forces are very much against you, your business will do ok. If they are all against you, you'll be in the position of the airlines. And if they're all in your favour: brill, you're Coca-Cola.