It isn't the right play.

Part of the reason Meta is scrambling for purpose is how much privacy laws and changes have hurt them while their platforms fail to attract new generations. Ads are still selling, but they can no longer tie them to actual sales. Users are still logging in, but aging (i.e. failures to capture the younger generation).

Personal AGI has massive hurdles to overcome to be anywhere near the levels of profitability their ailing ads network is. This will bring in new data for them to mine for sure. But it will basically have to outrun new legislature that will likely limit just how "personal" these systems can get as they seek the profit they need to sustain growth via said data.