Honestly, this is about what I expected. I have the admittedly niche and somewhat impractical opinion that it's within no one's rights to have ownership over an idea, an implementation, or a solution to any problem at all. When businesses try to base themselves off of that type of ownership, of course they'll be threatened by someone putting together a small side project for the fun of it. Ideas aren't something you can totally own: someone else will come up with them simultaneously, make a derivative work, or just have fun with it in a way you can't physically stop. I think I'm seeing that play out as a business in a bad position and a person trying their best here. I mostly just feel bad for the OP and a bit irritated at capitalism, as always.