The business model of the agencies has not been to build up the sub base by rewarding loyalty but, on the contrary, to maximise short term PPV income through 'upselling' and 'draining the simp'. This strategy only works if you have an endless supply of new subs to replace those who get disillusioned and leave.
The effects of this on Mik's sub base can be seen in the falling numbers of likes on her VIP posts. Her two birthday posts on VIP this year have so far received well under 100 likes each. By contrast her birthday in 2023 was marked by four posts with around 500 likes each.
Of course some of the difference is because of likes being added over time, but I remember there being 300+ likes on those posts when they first appeared. If we take the number of likes as having some constant relation to the number of active subs, she may have lost well over half of her paying fan base over the last year.