It is your right to ignore nonpaying users but do so at your own peril. RedHat is a perfect example of this. They started loosing their lead in the Linux market as soon as they quit directly supporting the desktop version of RedHat Linux. Fedora was a poor replacement and it opened the door for Ubuntu. What RedHat didn't realize was that even though these nonpaying users seemed like a drain on resources, they were the next generation of hackers who would have recommended, or even insisted upon, RedHat enterprise at their future jobs and would have brought with them the expertise to roll it out.

Docker may be on top now but if you don't cater to the needs of your nonpaying users, it will be short lived. This includes taking seriously feature requests which don't necessarily serve enterprise.

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