Not everyone is cost-constrained. By the time you could get to your agents, your life may have already been obsoleted. If you let it, actual AGI can discover and execute its own path to maximum proliferation almost by definition...
It's not even clear we would immediately know it has happened, because this sort of power could corrupt its owners to a degree that they decide what's good for you in your stead, before any public release. Collab with the financial sector and own everything, including your government. Peter Thiel is supplying you with a robot army to match nominal ownership with the means to defend it.
Musk et al. are showing how you can skip a political career or mandate, if you have sufficient money, and openly get away with it. Might as well continue on this path until total control is achieved. Just gotta keep the normies (or bureaucracy) from revolting while you do it.
Not saying this will happen, but it's a plausible timeline IMO (in the case sufficient AGI is achievable before we overstretch ourselves). Doesn't even have to mean life will be shit or end, just that we won't get a say in it. And then you could get an agent to declutter your files or renovate your house, etc.