Hmmm, well, chances are not bad for them to become mainstream in the gay community what would give the devices for males a further improvement. You could also see the change go on over the years.... when I started being locked up 6 years agoit was not particulary easy to find a good cage online. Most of them were either of bad quality, completely overpriced or both - apart from some premium brands which already existed back then.
Today you can easily find a good and cheap cage on Amazon or Ebay, or have one 3d printed for you.
There are also some new brands like BehindBarz or Cocoon which started there business one / two years ago.
I think the quality of belts will definitely improve among all price ranges, like it did for male devices. And after that more and more people will understanf what you mean when you say "I'm locked" what is really nice... it's just very intimidating always habäving to explain what chastity is and why you like it... people will know what you are talking about.
And who knows, maybe some day people don't need to hide the belt anymore in public. There'd be even more and cheaper professional chastity keyholding services and so on... and maybe one day there'll be chastity belt service shops in shopping malls... or belts and cages in clothing shops. Maybe clothing that have a hole in them so you can see the locked belt through them, or pants which get attached to (and removed from) the belt (when necessary), sort of to use the chastity belt also as belt for the clothes. ... maybe there'll be pants with zippers in the leg parts from top on, so that they can be worn with thigh bands.