Scaling small things up is always a logistics and repeatability issue. Always.

We had.technology to put a capsule of three men on the moon for a week before most humans alive today were born, and yet we haven’t gone back because while both “number of humans” and “length of stay” are fairly simple ideas to scale up, we never had the logistics to create and fuel the one.saturn V launch every other day that a permanent moon base would need.

Heck, the Internet is full of ground breaking improvements that were “buried” by the challenge of scaling up out of a lab.

IBM has never stopped selling mainframes. One of the big reasons why finance transactions are still COBOL is IBM consultants insisting that a centralized mainframe is better than a private cloud.