A long time. It will be years until that happens. The client-server configuration has been in place for decades. Plus not all data is going to be on blockchain unless we have a lot of privacy layers.
But for now, we can keep adding data to these open databases (blockchain) to help the AI training availability being open to those outside of Big Tech.
seems like I found an emerging technology. Very unfamiliar with a lot but I'm hopeful and as the kids say bullish