Probably because they have thrown as much money and manpower as they possibly can at the core problem and investing more into it is diminishing returns. Buildi

Probably because they have thrown as much money and manpower as they possibly can at the core problem and investing more into it is diminishing returns. Building out a platform is the logical next step and there are probably 100s of revenue positive businesses they can build on top of it by just throwing some software developers at the problem. They are going to be releasing a _lot_ of products over the next few years that aren't just "GPT 6" or whatever. You might as well ask why google built an ad company or email or video, or a browser or a phone OS etc, when they should have spent more money on their core search engine.