Give ChatGPT access to OneDrive or other online storage

I have extensive Wordpress documents in OneDrive representing books and articles I have created as a professional writer, as well as research information for various projects. It would be very helpful if either (a) ChatGPT could access my OneDrive after I give it a username and password, or (b) ChatGPT has its own document storage where users could upload many GB of files for focused access, such as “search my vault for the folder marked Market Research.” Microsoft and AWS provide very inexpensive online document storage. OpenAI could do the same and charge based on volume as AWS S3 does or an annual fee as Microsoft does. The puny “memory” allowance within ChatGPT is not nearly enough for Plus users who are professional writers or content creators.