A simpler reasoning is that there wasn't any demand for his paintings while he was alive. His show ran from 1983-1994 and he died in 1995. He was reasonably popular at that time, sure, but Bob Ross as we know him only blew up in the 2010s in the internet/YouTube/streaming age.
Now there is a trove of 1,165 paintings which are no doubt valuable, but cannot all be sold because they would flood the market and decrease their own value. So Bob Ross, Inc. is cleverly keeping them under lock and key and letting the scarcity drive prices up.
Taking a look at the demo (https://www.ikiform.com/forms/a2675039-5901-4052-88c0-b60977...), I'm not sure where the comparison to Typeform comes in. Probably the most unique feature of Typeform is the focus on user experience of the forms themselves, everything else is/was mostly built to support the forms, and making it as easy to fill out as possible. Things like the back button always being visible, no validation of fields as you enter data, no progress indication and so all makes it seem like there is a lot of polish left to do.
I guess the form looks OK, which is alright of course, but I'm not sure it actually serves as an alternative to Typeform. It seems to me to sit somewhere in-between the traditional (ugly) form providers, and Typeform, which isn't a bad place to sit at, but maybe people expecting a Typeform-like experience would feel slightly bait-and-switched by the comparison.
There used to be another open source project that replicated the form themselves and the experience (as far as I remember), but seem defunct by now (for the last 6 years...): https://github.com/tellform/tellform Besides that, seems there are some other open source alternatives, but I can't say I've tried them all (at a glance, Quill Forms seems most similar to Typeform): https://github.com/search?q=typeform+archived%3Afalse&type=r...