There are unknown issues down that road. Given 1000 years AI could probably replace all work, but I think we’re all on the same page of “could AI replace 95% of work within a timespan that’s meaningful to people alive today?”, and in that term the realization of an AI-powered machine doing all manual labour (even an AGI one) still has a too many unknowns for a meaningful answer.

We were “going to have flying cars in X” for a long time, but it turned out that building a flying car was not actually the problem that needed to be solved in order to make them viable.