This is an awesome project. I highly recommend reading through his series on Medium (eg https://medium.com/@CantabileApp/implementing-window-messagi... ) That being said, I think he is overestimating the market that would pay for this. This seems like it could attract at least a small community as an open source project, however. Unfortunately effort in development is not always rewarded with monetary gain. Perhaps h…
Also, Wine already exists. If Wine is ported to run on Windows, this project is redundant, I'd assume? (In fact, it strikes me now that if you're on Windows 10, you could probably run Wine on the WSL.)
His approach will result in higher fidelity for apps as they are basically running on Win64, just with a 16-bit virtual machine driving it.
Wine apps running on Windows would likely feel non-native as the UI components are reimplemented from scratch.