"Business takes my hobby"

Here is the story that about 20 years ago, when I was compiling a Linux kernel, I was beaten "Ebata! Don't play with the toy OS!"

According to EtherCAT, which officially hsa adopted by a major automobile manufacturer, the reason why I just built a system with EtherCAT, is that I happened to find an EtherCAT slave in my home junk box, and I wanted to use it as a human sensor slave.

The only reason I started using Raspberry Pi was that it was the only "computer that can operate a server" that I could purchase on my own.

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The technology (programs and electronic circuits) that I started with my personal hobby and acquired through that process, is

"used in the business of my company".

Somehow I can't convince.