In 500 years there will be fewer radicals than today as a percentage of the population. Fewer humanitarians. Fewer communists. More greedy scum. More sadistic monsters.
Until one day we are all no more than the beasts Capitalism already treats us as.
Feudalism also rewarded the worst and greediest scum, for a lot longer than capitalism has, and the result was the Habsburg jaw.
But seriously comrade, the idea of 'dysgenia' is a dangerously reactionary concept, and thankfully more or less nonsense. Genetic changes in a population amounting to real 'evolution' of a species take tens of thousands of years to happen at the absolute minimum, and such a short time frame would need an EXTREME environmental pressure on a part of the genome that already has a high potential for change.
The genetic basis of personality, or whether there even is one, is a compete mystery - and I am inclined to believe that even if there is any influence, it can be easily overcome through changing people's material conditions. As a force, greed and sadism are already encouraged to far more effect by glamorized depictions of wealth and power in capitalist media, than by the extreme long-term selection by genetics. And consider this - which part of the population is in a position to be selected for greed and sadism? The ones already in charge as members of the capitalist class, and the population of the imperial core who (for now) have a material stake in supporting the Empire. For the entire rest of humanity, co-operation is by far the best chance for success.
But even that is not really important, because one way or another capitalism literally cannot exist 500 years from now. Either the global economy will have collapsed from the climate crisis, or capitalism will have been overcome by communism. So don't worry comrade, capitalism cannot be 'bred into our genes', any more than feudalism or slavery or hunter-gathering was.