Instead of slashing the sale price, incentivizing leases seems to be the go to for now in the EV market. You can only kick the can so much -- 2024 December will be a glorious time to buy vehicles.
Leases right now are assuming much higher residuals for EV's than for ICE cars which is where much of the difference is coming from. It's hard to say whether that will turn out to be true or not, but if the manufacturer/dealer is willing to take that risk it might be a good idea to take them up on it.
A lot of lease special deals are during the holiday season, so you have a lot of leases ending around that time. (We leased our Tesla last December just before the $7500 tax credit expired.)
With the gas savings we're paying about $200/month for our Tesla 3. Our only regret was not leasing the Polestar 2 instead.