This is a misunderstanding of how both athletic scholarships and most NIL deals work currently in the NCAA. Most of the power 5 conferences (I can say with 100 percent certainty the SEC) now guarantee signed (ie NLI not NIL) scholarships for four years. Even if the athlete is cut for performance reasons, this scholarship has to be paid for those four years if they remain at the school.
These NIL scholarships are generally given out by "NIL collectives", which operate in a NCAA legal grey zone of being technically separate organizations from the university but effectively work with it to distribute booster money to athletes. There is no cap on this money besides how much the donors are able to give. The catch is that they are very much not secure and can be taken away for any reason. Very few male distance runners have a bona-fide NIL contract deal from a shoe company, as they simply don't have the name recognition. If you are not an influencer or Top 5 at NCAAs type runner it is not as simple as "just get better" to get these types of deals.