I think it's less that "we can't expect those results here" and more "no program should expect those results consistently".
You're choosing a very small sample size (2017-current). The one-and-done format of the NCAA's means that you have to have a talented team that is playing well at the right time...and you also need a little luck. Both of those programs winning two titles since our last title is more of an outlier, less of the norm. Team success is cyclical, everyone goes thru their ups and downs.
Take UMD. They went the first 60+ years of their existence without a single title. Then another 6 before their next. And, if I'm being honest, I see UMD entering another title drought.
DU had 5 of their titles in the 50's and 60's. Then had nothing during the 70s/80s/90s...three plus decades of no titles, with most of those teams not even making the tourney. Then they get their back to back followed by another 12 year drought.