I had a worse experience. My first internship was doing web development in ColdFusion. Why that language? Because when the company was first starting, none of the funders wanted to learn Linux/Apache administration and CF ran on Windows.

Also, the front end development team did not have version control but shared code via a file server.

Are we really doing fine? 4% linux market share? Windows is a default?

I suspect that the issue hindering adoption is GNU and other user land projects, not the Linux kernel. Plenty of people use devices that pair a Linux kernel with an easy to use UI and popular software (see Android and Chromebook).

Many people would happily switch to a Linux based OS that had the exact same GUI as their current OS and ran the exact same software. That is not a realistic requirement in practice.

It is possible that Linux would have more adoption if they invested more money into having drivers for a wider range of hardware, but having Linux kernel develers write drivers instead of hardware vendors is not a strategy that scales well.