Capitalists are not a monolith. Some of them like the donald and crypto bros don't have materialist perspectives on wealth but they are not industrial capitalists. They are finance capitalists and they only deal in theoretical economics never in the physical reality. That is why every move made under this administration has made their situation worse.
There are a good number of capitalists who deal in real things like agriculture and manufacturing and they have no choice but to have a materialist understanding of wealth because they deal with materialist conditions every day. Just because you don't see these people pushing back against financialization doesn't mean they aren't aware of the repercussions and aren't preparing to use the inevitable collapse to their advantage.