That is exactly what many are doing.
Women have discovered they can get all the perks of having multiple BF with none of the commitment problems.
It is much more common than the “I don’t have $$$ to date”
The other thing is that the very attractive young women are basically renting themselves out on the internet via “Sugar Daddy”.
They are basically paid escorts for wealthy men. This is what the young blonde coed that went missing in SLC was doing.
They get men to buy them things in exchange for sexual favors.
The other thing that millennials do is hook up on Tinder.
On the other hand, my first “date” with my wife cost nothing. We went hiking. She came back to my house after had a beer and then left.