It depends.. I do not believe it is easy. Never said that it was - it will be very hard.Don't we have 300-some donors to We Will at the moment? As in, every single We Will donor could fit in a lecture hall right now.
It's pure fantasy to think we will get to 100,000 much less 14,000.
Feel juvenile to say "We would have a lot of money if [preposterously optimisic number] fans gave money." Of course that is true. Doesn't make it realistic.
But I don't see this as impossible. In my opinion, you need to drive this through a crowd funding type of model. When donors can see growth and how each person is adding to the whole, it makes a big difference.
You can see this on GoFundMe and other crowd funding platforms all the time.
There are many more than 100k fans that spend significant amounts of time and money on ISU athletics.... it will be like hearding cats to get them to sign up one at a time.. but if you have a platform that shows monthly, annual donors and contributions it can create a lot of energy around the effort.
Think about CF - I think that was up to about 1000 donors giving an average of $10 / month on patreon... If CF can get 1000 donors, I think ISU athletics can get 10k.
Takes time and the right platform.