As battery/storage deployment improves, this will balance out. Imagine a bunch of plugged-in EVs and home batteries ready to charge on demand in the middle of the day, etc...
South Australia has been trialing that exact idea with smart wall sockets and grid connected devices. One such device is a grid aware hot water heater. If you will need the hot water at night or in the morning it doesn't matter when you heat it initially.
Right, but we're talking about evolution of infrastructure. Putting plugs at parking spots is extremely cheap, and in fact is happening already basically everywhere.