France has 80% zero carbon all the time. Why not resistive heating?

According to the IEA [1], 43% of the energy consumption is oil (transportation, heating), 18% is natural gas (mostly heating), and 25% is electricity. Switching to resistive heating would require doubling the electricity production. Using heat pumps is much more efficient.

[1] https://www.iea.org/countries/france/energy-mix

Heat pumps reduce electricity usage by at least 3x and also provide cooling.

It's expensive compared to heat pumps, especially if you also want air conditioning.

They lose out on export revenue

> Why not resistive heating?

Because France has a massive dependency on nuclear power... of course resistive heaters are cheaper than anything else when you got a ton of NPPs around. But their plants are all aging and are a nightmare to keep operational, so if they'd switch over to heat pumps their total energy demand would go down drastically.