In the past decade the people have had the opportunity to elect someone younger with those qualities. Plenty of younger people have run.
The problem is that if you compare these people directly, one younger person with new knowledge like knowledge of the internet, and an older person with the experiential skills of a manager, the later wins for the position.
Tech-bros ran in 2016, 2020, and will be running in 2024. Vivek Ramaswamy is a 38 year old pharma and finance-bro with a science degree and new knowledge, who is running right now. He also has a JD, and has started his own successful companies. By all accounts he appears to be a very smart and accomplished individual.
Unfortunately he will not win because the skills of an older manager outshine what he has to bring to the table. He is currently lagging behind Trump and DeSantis in the polls, and is presently fighting Mike Pence and Nikki Haley for third place deep down near the sixth percentile.