I learned from some female monastics about the difficulty of running female monasteries and being female monastics, mainly because of the following reasons:
1) it's difficult to find and maintain female lay stewards;
2) "there are many chauvinist male monastics and yes this can be very discouraging";
3) "also discouraging can be the women both lay and ordained who denigrate females and mainly support men."
I can imagine the first difficulty is probably also related to the third difficulty. While I was visiting a famous man's monastery in Thailand, I heard comments from the female supporters such as "the nuns talk too much ..." (and hence were not considered to be worthy of their support). So it's not very surprising to me that Theravada female monasteries/bhikkuni linage died out. By the way, being a woman myself I don't think female practitioners are worse than male practitioners (if not better
Thanks to the efforts of the courageous pioneers and compassionate supporters, now the female monasteries reemerge, where dedicated female practitioners can follow the Buddha's teaching, and "dwell possessed of virtue, possessed of the Patimokkha, restrained with the restraint of the Patimokkha, perfect in conduct and resort and seeing fear in the slightest fault, train by undertaking the training precepts".
But how can we help them survive and develop? I'm wondering if some income of those gone forth such as their pensions, social security payments, retirement funds and so on can be received and managed (and invested?) by some trustworthy organization/foundation on their behalf, and donate to the monasteries that they designate. These funds could be used to pay the lay stewards some monthly income, so that the monasteries could have stable stewards working there. This could apply to man's monasteries as well. I wonder if it's possible to do so.
Just some food for thought. Your input will be welcome and appreciated. Metta to all!