Eh. Patience. In the 70s, text editors, operating systems, and just about everything came from corporations, governments, and perhaps most commonly, universities when it came to software tools, and was hosted on their systems. As the hardware became more accessible, and the power needs diminished, it moved out from the mainframe to the client side.

This process will take time, but if we don't have the equivalent of chatGPT available on a home system (if not phone sized device) in 20 years, I'll eat my hat. There are already open source projects on Github that'll let you roll your own, but good luck coming up with the computing power.