There are core features of the state that we have collectively agreed must be provided - social safety (including police and safety nets), infrastructure, defense, core research funding and more.
The cost of providing the basic obligations and debt service of the U.S. amounts to roughly 1/3rd of the U.S. GDP, while taxation on any activity induces friction and higher costs - the bill will need to be paid either via capital markets or taxation. The investment in automation is no more important than food, or my children's education in my view.
Taxation is generally preferable for capital owners compared to currency debasement and forced debt purchases as it maintains boundaries on what the state can and cannot do. If the current trend is towards a greater share of the economy accruing to capital owners is maintained, then capital taxes will eventually need to rise to sustain state obligations.