Do you think adoption of EV will be success or failure? Will eventually became replacement for combustion engine car and become mainstream?

There improvement of efficientcy on internal combustion engine seems reach it bottleneck after nearly hundred years of developement,dictated by heat loss and friction between machanical part as there only that much can do to squeeze more power per drop of fuel you burn by adding more complex technology like turbo charge,direct injection,variable valve,hybrid system that increase air to fuel ratio yet the return is diminishing after add on hundreds of complicate part to archive.
EV on other hand is still on early stage of development much more room of improvement to play on many aspect like substitute of battery material with higher energy density,solid state battery or different chemical compound capable hold charge with less eviroment impact.Another problem is the notion of buying ev to offset fuel cost in long run is slap in the face by it car value depreciation which is far worst than ICE counterpart lack of charging infrastructure cause the range anxiety of ev owner had to take every long distance trip with meticulous plan to cross charging station include route ahead.At begining when the first ev is launch i really like EV for it simplicity over ICE but over recent years as it more become popular all the fire accident during charging,hard to extinguish after caugh fire,massive depreciation problem im bit dissapoint with EV yet i really hate complexity modern ICE.