the answer is that "white people" are defined by their access to capital.

in example, thats why the irish were not-white in the u.s right up until they, as a collective group, had obtained an average wealth where you could assume an irish person had some level of capital backing them, and suddenly they became the new whiteness.

better stamp down on those poor others beneath you irish man, lest you become other again yourself!

"whiteness" is an illusion used by capital to promote the racial divides of access to capital that are heldover since colonialism began.

this is why restitution for slavery (excepting restitution paid to slave-owners) was, and is, so derided by the capital class.

thats why the irish in the u.s were (and are) accepted as white while the irish in ireland were (and are) still having a settler colonialism done to them.

how many irish in the u.s have been revolutionaries by comparison to those in ireland?

white people have no revolutionary potential, because those that are in a position to be revolutionaries are not accepted as "white"