Haven't worked with these specific sensors before but I've worked with some microfluidics and other exotic ICs and in my experience, most niche sensors usually

Haven't worked with these specific sensors before but I've worked with some microfluidics and other exotic ICs and in my experience, most niche sensors usually need to sell thousands to break even on the support cost of getting even one customer up and running with just a tweaked reference design because the engineers have a lot of competing responsibilities. Oftentimes these manufacturers are also competing for fab time against ICs with a cheaper setup cost and higher volume so theres extra pressure to get together as many big orders as you can, otherwise the extra setup overhead drives the cost through the roof. Hobbyists and small customers would drive most of these niche fabless companies to bankruptcy