Musk, Bezos, Gates build their business around sometimes decades old proven tech. What makes you to believe they are going to invest into lenr?
Give me at least one example of these guys inventing something.
By all accounts, Gates is a superb programmer. One example will do. He wrote the BASIC compiler for the MITS computer without having access to a MITS computer. He put it on paper tape. It executed correctly the first time.
Gates' programs were conservative. They were often rehashes of decades-old technology, but at the time he wrote them that was a good strategy. I was writing similar programs, migrating mainframe and minicomputer applications PCs. There were big differences in the hardware so you had to be creative and you had to know a lot about computers to make a PC into something like an IBM mainframe. That is what the customers wanted. They also wanted personalized software that did things no mainframe could do, such as spreadsheets. Gates recognized this early on, and met that demand.
Microsoft products are often criticized unfairly. In the early days they had to work on a wide range of different computers that were supposed to be compatible but were not. Later they had to be backward compatible, or the customers would go elsewhere. In the mid-1990s they had to work in a tremendous range of different markets, in different languages. I was very impressed when I saw the U.S. versions of Microsoft Word and other apps could work on a U.S. computerin Japanese. They worked as well as any software package designed in Japan exclusively for that market. That is an incredible accomplishment. I do not think the previous market leaders such as IBM could have pulled it off. Granted, it was easier with giant RAM and disk space, but it still called for a level of organization and coordination that few corporations could have achieved in the 1990s.