on a system with limited supply makes sense to limit the amount per wallet/person/platform too
if decentralization matters, it makes even more sense
a better system would be decentralized and capped to a dynamic amount influenciated by the amount of money you need to take over (dominate) the network
have you heard about 51% attacks?! trying to control them is how the blockchain may mitigate the effect of centralization on a small amount of hands and it is already a invisible limit to how much a platform/person/wallet must own
problem is that it is not a directly enforced limit, just imaginary, and it would not survive a collective attack from any formed oligarchy looking to take over it
wallet level would be easier but easier to scape too, same for person
anyway, still thinking that goverments could tax 100% when gains are over X amount, this reduces inflation and the need to print too much new money, (right wing economist agree) giving more value to current money and improving overall peoples lifes with no real impact on taxed billionaires (your 45th yatch can wait, marx said), accelerating money flow, so it will change of hands faster (keyness added)