The first of many dreambooth startups?

Not even the first pet-focused one ;-)

- pets https://imaginarypaws.com/

- hair style/transplant https://www.hairgen.ai/ https://www.hairstyleai.com/

- profile pics https://photoai.me/ https://www.profilepicture.ai/ https://avatarai.me/ (also does dog/cat)

(Not a criticism of OP's work, this will definitely not be a winner-takes-all market)

Wow, and Ruiz et al published the work only around 4 months ago. Who did the first open source, was it https://github.com/XavierXiao/Dreambooth-Stable-Diffusion?