You're being intellectually dishonest because I'm sure you know that there aren't black owned alternatives to several of the things you mentioned.
Name a black owned airline that could have flown people from across the country and the world to the event. Do you even have a regional airline example? No, you don't. Air Atlanta and Wheeler Airlines have been long gone.
Name the list of black owned hotels throughout the DMV area that could have housed 1 million black people. According to the below link, from the NABHOOD website, there are approximately 2000 rooms available at black owned hotels in the DC area. So, no example there either.
Washington DC
Name the black owned gas stations that black people should have filled up at.
Name the myriad of black owned retail stores that black people should have shopped at. And shop for what really? Most people were only there for one night and many left that same day. Just another excuse on your part.
Name the swath of black owned restaurants that black people should have eaten at. Besides, Ben's Chili Bowl and maybe a few others that are widely known, how would black people have found these hole in the walls? Especially since most people were out-of-towners who aren't from the city. Again, weak.
Let's just be honest here....you're lazy and don't want to do anything. You're part of the problem, not part of the solution. Happy Holidays!
Peace