Taxes aren't an objective truth handed down from on high; so, in some sense, all taxes could be considered arbitrary. In this case, taxing one kind of wealth mo

Taxes aren't an objective truth handed down from on high; so, in some sense, all taxes could be considered arbitrary. In this case, taxing one kind of wealth more than another is a lever the state has to (dis)incentivise certain behaviours and thus create a better society (although in some cases, you may fairly ask - better for whom?).