Electronic shifting, while nice, is inferior to continuously variable transmission. It's that nobody has managed to get that done cheap and reliably - and it'd

Electronic shifting, while nice, is inferior to continuously variable transmission. It's that nobody has managed to get that done cheap and reliably - and it'd have to be inside a gear hub too. It's been done reliably, just not cheap. Mitsubishi with its v-belt has probably the cheapest somewhat reliable version, others less reliable based on expanding chain. Enviolo also makes one of these groupsets. Very new tech in bikes though, if used at all. Ancient tech everywhere else, and can be done even better than these attempts.