I also wear the brand Splay casually. I’ve been slowly transitioning without much thought till ~2021. I have very flat feet and had used orthotics and normal/supportive shoes for some time. I knew my feet shouldn’t feel so tired and achy when not in much use. I think it really hit me when I came across something on the internet saying you can strengthen arches no matter how flat. It planted a seed then, and I knew there was better out there. I mean, my ancestors somehow figured out a way to survive before shoes. Maybe I could do. Anyways, yes, you are correct. There is a gap there currently. I’ve seen the barefoot/minimalist shoe grow substantially even the few years I’ve followed it. I believe will see many gaps close in the market soon enough.