Thank you for brilliant comment highligthing the OSS issues.
But I believe you're missing the main point that OP is making: OSS will _statistically_ dominate every single niche.
There are just more reasons why non-OSS software would cease to exist - so eventually Inkscape will become a de-facto standard for Illustrator things; Blender will become de-facto standard of all 3D-Max things; OBS will become a de-facto standard of all Macromedia Flash Broadcast ... oh wait ... did that happen already?
But I believe you're missing the main point that OP is making: OSS will _statistically_ dominate every single niche.
There are just more reasons why non-OSS software would cease to exist - so eventually Inkscape will become a de-facto standard for Illustrator things; Blender will become de-facto standard of all 3D-Max things; OBS will become a de-facto standard of all Macromedia Flash Broadcast ... oh wait ... did that happen already?