Most personal tasks take trivial amounts of time these days. Does a 5th grade teacher or an auto mechanic need a personal assistant? Do we need to be able to book a trip faster? It feels very gimmicky to me, but I realize I'm not their target audience.
Given that, I do think Meta will probably get the lions share of B2C AI and they have a proven track record of using personal data to serve ads and make a lot of profit. If they capture more of their user base's time, it keeps them engaged and away from a list of competitors. If Meta starts crushing it in this fashion I could see IPO's of OpenAI and Anthropic land like fart in church.