[M T]

Stanford couldn’t put in a hosting bid as the stadium is being re built

That's obviously not true.
1. The NCAA has allowed bids in the past where the event was held at a different stadium than the host school's regular stadium.
2. I question the time allocated to re-configure the football stadium.  The concert is May 31.  The Regionals ended on May 18.  The SuperRegionals will end on May 25.
    Farm Aid III had 69,000+ music fans on 9/19/1987 just 6 days after a Nebraska football game.
    The Penn State stadium was transformed beginning on Tuesday for a concert on Saturday in 2017.
    This 2024 article describes transforming soccer stadiums overnight for a major pop concert.  (Converting TO a concert configuration is easy as the concert people are well prepped to do it.  It also notes that the conversion back to a sports stadium takes more time since the ground condition is a concern.)

The question I'd have of Stanford is why they said they couldn't do what others do.

[M T]

Stanford couldn’t put in a hosting bid as the stadium is being re built

That's obviously not true.
1. The NCAA has allowed bids in the past where the event was held at a different stadium than the host school's regular stadium.
2. I question the time allocated to re-configure the football stadium.  The concert is May 31.  The Regionals ended on May 18.  The SuperRegionals will end on May 25.
    Farm Aid III had 69,000+ music fans on 9/19/1987 just 6 days after a Nebraska football game.
    The Penn State stadium was transformed beginning on Tuesday for a concert on Saturday in 2017.
    This 2024 article describes transforming soccer stadiums overnight for a major pop concert.  (Converting TO a concert configuration is easy as the concert people are well prepped to do it.  It also notes that the conversion back to a sports stadium takes more time since the ground condition is a concern.)

The question I'd have of Stanford is why they said they couldn't do what others do.