These definitions are ORs, not ANDs, so they don't all have to apply. The example that you just described—a white person, able to move to a mostly-white neighborhood, with a social network of almost entirely white people, who creates a product that excludes people of color—exactly describes institutional racism.
If someone is discriminated against on account of their race, it's racism. There doesn't need to be any intent.
(And if you want a more academic definition rather than a dictionary one, racism is a race in power institutionalizing their prejudice against other races).
And the bullet point under that:
These definitions are ORs, not ANDs, so they don't all have to apply. The example that you just described—a white person, able to move to a mostly-white neighborhood, with a social network of almost entirely white people, who creates a product that excludes people of color—exactly describes institutional racism.
If someone is discriminated against on account of their race, it's racism. There doesn't need to be any intent.
(And if you want a more academic definition rather than a dictionary one, racism is a race in power institutionalizing their prejudice against other races).