If white people are a monolithic entity, what possible incentive would we have to give our rivals more room to manouvre? I see two options - either race doesn'

If white people are a monolithic entity, what possible incentive would we have to give our rivals more room to manouvre? I see two options - either race doesn't matter to anyone worth listening to, or white people aren't being aggressive enough in securing our own interests. Or can you articulate a third position?