I see this as an insanely dangerous game. IME most non-rowers won't touch an erg without significant instruction/encouragement as they're technique dependent. Any that do will quickly figure out from anyone who has rowed that C2 is the standard and everything else on the market is flaming garbage.
Add to this that I could recreate this business using the C2 API in a couple weeks and suddenly have a market of everyone who owns a C2 (all the people in this thread complaining that it doesn't support their machine) along with a literal potential customer list available through C2.
Add to this that I could recreate this business using the C2 API in a couple weeks and suddenly have a market of everyone who owns a C2 (all the people in this thread complaining that it doesn't support their machine) along with a literal potential customer list available through C2.