Tayphad,
Statistics relating to the general subject, or reliable ones are difficult to come by. Crossdressing statistics suggest that as many as 10-11% of males crossdress, maybe not on a regular basis. You then have to take a percentage of that group who favour being in service to their partner, usually in the form of a sissy maid. Living on the age of mass communication and a plethora of information available on the internet, it is so much easier to read about the subject and obtain ideas and experiment. The hardest thing must be for a submissive sissy to find a partner who is interested in developing this lifestyle. It does appear that there are far more willing submissive males waiting for the opportunity to serve than there are women in the world who wish to fulfil the role of a dominant and engage fully in an FLR. For me, the answer as to why not is very simple, it is several thousand years of the patriarchy and the roles that have been defined for both genders. It is only now that many of the traditional roles and responsibilities are being questioned and roles reversed or more opportunities afforded to women in society in general.