Math is only part of it. My initial investment came from doing the math on the C250, which was due out in months. Others, I'm sure, invested when profitability was due next quarter. Others, I'm sure, invested when Capstone Finance was going to be a game-changer. The math always looks great.
I give DJ credit for being able to get a new haul of suckers every year, despite what's probably the worst record on shareholder return of any CEO whose company remains listed. And it remains startlingly difficult to get references from Capstone customers confirming the asserted payback periods on its equipment.
Sure, the company might become profitable. There are other profitable companies that have managements I'd trust more with my money.