Or, more probably IMHO, most people will keep using the standard UIs because they are ready and they need no work to build.
Now they extracted the value from interoperable open systems, they would love to replace it with closed proprietary systems.
How do sites like Wikipedia get updated? What if I need to upload important documents to different portals? It all has to go through the AI companies? They have access to medical records too? My taxes, social security, etc?
Is this how Microsoft imagines Office 365 and Sharepoint will be merged into? Disney, NY Times, Youtube, Netflix will all be fine with chatbots handling their content?
yes you and everyone else.