The biggest LLMs comes from the Big-Tech companies. It would definitely destroy their monopolies if we use their other products. 
Do anyone really believe that somebody who’s creating LLM independently has it’s own database of all services and uses it instead of Bit-Tech search engines? What about the costs? So we suddenly have altruists who shares not only their work for free, but also services with TB or PB of data for possible millions or billions of people and they have no business in it? 
If it’s about money people are going crazy. If something is free people immediately stops to think. They really believe that people like Bill Gates spends their money and does not have anything from it. They in fact win much, much more than they spend and then they mention said spending in marketing, so they are seen better in mass. Meanwhile they collect your data into shadow profiles and sells them for huge amount of cash. 