If the gap had stayed constant, households with high school dropouts would have $200,000 more in wealth than they now do.
Trump's big idea (and given it is now completely his party, the Republican's big idea) is to return to 1970 and the heyday of manufacturing and strong wages for folks outside the information economy. Put up trade barriers and bring back manufacturing jobs. A lot of people get really excited about this (im)possibility.
The Democrats' big idea has been to create better social safety nets for high school dropouts. Until now.
Biden's infrastructure plan is a reasonable approach to addressing this gap; big construction projects will create really good jobs for folks who haven't learned programming, enabling them to create wealth and some measure of economic security.
How much is Biden's $2 trillion plan that spills across a decade? A paltry sum. Last year, household wealth rose $12 trillion to $130 trillion. $200 billion a year (roughly what Biden's plan proposes spending per year) is less than 2% of the amount by which household net worth ROSE last year.
Spending $200 billion a year is too little but it is a start at the creation of good jobs for folks without college degrees. It doesn't do any of us any good to make the penalty for struggling in school so high.