-
And if Biden wins, then he's not likely to be as incentivised to change the process that got him there.
There must be some incentive - as @Greenbank says, they've won the popular vote every year bar one for 20 years but only had 8 years of power. I also doubt that Biden is under any illusion as to why he's where he is, he must appreciate that at least some of his role is to strengthen processes to stop another Trump happening rather than the creation of a personal legacy.
There's parallels with our fptp system isn't there? An obvious, fatally flawed somehow no doubt, solution would be to make electoral college votes proportionaly allocated per state. I can't imagine that kind of change will ever happen.
-
https://en.wikipedia.org/wiki/National_Popular_Vote_Interstate_Compact
The National Popular Vote Interstate Compact (NPVIC) is an agreement among a group of U.S. states and the District of Columbia to award all their electoral votes to whichever presidential candidate wins the overall popular vote in the 50 states and the District of Columbia. The compact is designed to ensure that the candidate who receives the most votes nationwide is elected president, and it would come into effect only when it would guarantee that outcome
-
electoral college votes proportionaly allocated per state
They already are based on population. How the votes are apportioned to each candidate is up to each state. It's not a perfect system.
It's interesting to look at the interactive maps of the US vote counts - you can spot the counties with major cities by the colour. The clearly town / country gap in politics in the US is staggering to see.
And if Biden wins, then he's not likely to be as incentivised to change the process that got him there.