It's also not fair that a family that purchases two $48,000 EVs gets two full rebates, but gets nothing if opting for a single $90,000 Tesla. Which is better for the environment, having one car or two? How is the family that is spending less total considered too rich to qualify?
Also, when people stretch to purchase a Tesla they do it with the intention of keeping their cars for a long time, so it's not fair that they're denied a rebate whereas someone who trades in their vehicle every three years get multiple rebates.
Keep one $90,000 Tesla for 8 years in Ontario and you're limited to $3,000, because you're supposedly "rich". Buy a $45,000 Audi A3 e-tron (uses gas for over half the typical drive cycle according to the EPA) and a $40,000 Volt, trade them in after three years for two more plug-ins and you pocket over $44,000 in rebates!