[matthiaswh]

I obviously don't know enough about your service or your marketing efforts to say why you are having trouble with acquisition. But the need for a PaaS for WordPress seems to be a very niche one right now. Most sites built on WordPress are blogs or small business websites with very little traffic. For these, a $50/year shared hosting account is sufficient (even if everyone on HN loves to hate on shared hosting). If they need more and have the tech savvy to do it, a $5/mo VPS is good. And if they need more but don't have the tech savvy, a $10-$100/mo premium WordPress host gets the job done.

There are more and more people attempting to build complex applications on top of the WordPress architecture. Tools like WP CLI, Capistrano, Composer, Grunt, etc. - these are just starting to carve out their foothold in the WP dev stack. I imagine in the next 2-3 years the need for something like a WP PaaS will grow.