While I certainly agree with you. I only agree to accept the terms for the sake of discussion. It's just easier to say "prosumer" than it is to say "target audience for video cameras ranging in price from $4-8k".
And the ambiguity of the language prosumer and pro is tricky.
If catering to Pros means, everyone who needs a pro camera and that includes the people who need a professional solution from affordable entry level to top of the line pro level and maybe even custom solutions, and a solid mid range.
The modular lineup of Red Epics and Scarlet's has a solution for a number of markets, from the serious film hobbyist or low budget indie filmmaker/student to the owner operator to the studio level hollywood production market.