As I've watched these videos over the years, it's been impossible, especially now, for me to not see how these and other such robots will replace and eventually

As I've watched these videos over the years, it's been impossible, especially now, for me to not see how these and other such robots will replace and eventually extinct all humans. In theory, a family of 4 humans could run a global economy run by robots and no humans. That's a sort of ridiculous, maximal state, but what makes any of us think that, given a continuum from the current state to that maximal state, we won't be somewhere closer to that state in 30 years, especially when considering the unreasonably effectiveness of rent seeking on technology-driven monopolies (e.g., Amazon)?