If this makes it easier to build new buildings/housing, I'm all for it.
I just priced a gas water heater and a heat pump water heater in a commercial setting. $4500 for gas with all venting and piping requirements included. $2750 for heat pump water heater, which should also have lower operating costs.
* It could improve the economy of scale for electric, with more supply chains and installers getting used to it, reducing price.
* It removes the paradox of choice, so there's more time for building and less time wasted making a decision.
Gas being prohibited makes it no longer a feature developers feel is needed to be competitive with other new buildings competing in the same local market, making it no longer a practical requirement.