...is that people continue to purchase software for Windows and waste their time attempting to make it run perfectly in Linux with a Windows API reimplementation, pretendulator, or whatever you want to call it.
I've been using Linux for 10 years now. During that time I've seen several small business that I've supported with purchases rise with Linux on the desktop and fall as the whims of Linux users move towards pretendulation of Windows software.
As long as it is acceptable to ship a product for Windows without seeing a drop-off in sales, people will continue to develop for Windows instead of Linux. Do not buy Windows products if you want to see them in Linux.
Learn from the unions, buy software made for Linux native if you want more of it. Continue to support businesses who do not support you and see desktop support for your operating system dwindle.