You should check your figures. I believe Drive.ai, one of the leaders in the industry, was acquired for about $500,000 an engineer last summer. The numbers you are thinking of are more appropriate during 2016-2018 when the hype train was at full speed. Last summer there was a palpable feeling that the industry was beginning to 'consolidate'. I would not be surprised if all of the non-OEM, non-Google backed AV companies go bust soon.