Because in the feeding frenzy, every company with a product/marketing budget is trying to make the customers pay by the token and companies are doing jack to help “mere mortal” companies get going with this stuff on premise.

You are right that the technical hurdles are not insane to get this going, but most companies don’t know where to begin and there’s no huge marketing blitz telling the business leaders this is realistically on the table and here’s the company you can call to make it happen for you.

Even if you overcame that and proposed really how to get going, you will still probably hit the aversion to capex that has persisted since Amazon told the industry that capex is toxic and you really want all your money to be spent on opex. Big companies like Amazon will take on that scary CapEx for you and you’re expenses will be nice and just OpEx. Coincidentally, the companies that spend the most on CapEx manage to pull in more revenue and profit than you will ever dream to, but still, remember CapEx is toxic.