@Techaltar Dane here. We have had a similar setup for many years (no or much lower taxes on EVs, compared to ICE-vehicles, at purchase), and our experience is much different.
EVs in general make up some 70% of all new car sales and around 90% if we look at private use only here in Denmark. Denmark is a pretty small market in absolute numbers, compared to just about all other countries around us, but we still have the lowest wholesale and retail prices in Europe.
Competition here is fierce, with campaigns and special offers and general discounts coming from all sides. Consumers have been winning big time in this case.
There is one thing that makes our market unique, though. We have pretty high taxes on new ICE-vehicles, to a point where EVs are now easily 10.000 EUR cheaper than a comparable ICE model, when bought at retail with the lower or no tax.
That may make our market dynamics different from offering subsidies - that part is above my paygrade.
Also, electricity for charging your car at home has been tax-free for years, making running cost for an EV a LOT lower than those for a comparable ICE model. If anything, that iz probably what could bring consumers over to the EV side.