You're describing institutional racism. Not general racism. This is why it sounds so stupid and why people instantly scoff at the claim. It's like calling socialism communism. They aren't the same, there are subgroups and umbrella terms with their own specifics and ideals. So when a person goes about saying black people can't be racist, straight up, it borderlines on the suggestion that we can be racist and discriminatory without accountability or harmful consequence. I'm not gonna go ahead and legitimize the conflation, obscuration, or shifting of meaning of words on a whim because some scholar decided they had a better definition for it or because ignorant people want to play with words like a game of broken telephone. Let's call it what it is. Institutional racism or systemic racism.
Racism in general is hate and antagonism directed at people of other races and ethnic backgrounds. Black people can be racist. Louis Farrakhan is racist asf. But by your definition I guess he isn't? OK THEN.
What are you suggesting? Black people can't in theirs, but Asian people can in ours? That's bullshit and you know it is. Besides, in accounting for the apparent discrepancies in business crossover, there's more to factor in here than racism.