Changes to the NCAA transfer portal have made it easy for college athletes to transfer from one school to another, year after year, without sitting out for a season.

That, combined with name, image, and likeness (NIL) rules, which allow student athletes to earn money in college, has skewed the most lucrative college sports in favor of power schools with a lot of money, some experts said. This year, only No. 1 seeds — Florida, Auburn, Houston and Duke — made it to the Final Four in the men's NCAA basketball tournament. On the women's side, three out of four — Texas, UCLA and South Carolina — were No. 1 seeds.

CNBC's Alex Sherman breaks down why we may no longer see Cinderella teams in the Final Four of March Madness moving forward.