It seems unlikely the EU regulators will ask for fair data roaming prices, too, anytime soon, as the operators most likely told them this is a cash cow for them

It seems unlikely the EU regulators will ask for fair data roaming prices, too, anytime soon, as the operators most likely told them this is a cash cow for them in the near future. However, this may be irrelevant in 5+ years, if the "Wi-Fi everywhere" program is implemented across the EU.