Quality is determined by the competence of the people running the business. If two companies are of the same or similar quality then the race, not skin color, of the owner can be used as an indicator of their competence. Since it is well known that non-white races get less resources at every stage of personal development. When a company like Meta buys them the growth potential is much higher.
I would disagree, there is a huge and closely knit support community for black-owned businesses that has existed for some time, a community that provides everything from money to experience.
There is absolutely nothing like this for, say, Asian owned businesses or even White owned businesses. You're totally on your own.