This is really cool! I actually did something similar back in the day. My username (purplehello98) got its start on Scratch! Anyways, I made this OS called "Inspire OS", so named because I based it off a project someone else had made called "Aspire OS". I used different elements inspired (ha) by and made by lots of others over the years (I remember Scratch's community was always pretty pro-copying/sharing code) and built up a fictional tech company, Bouncy, around it. I made fictional products (such as the oh-so-creatively-named uPhone and uPod)and other OSes as well, like Inspire+ and MD-DOS. I was really passionate about it back in the day! I even partnered with an elementary school classmate and we swore we would make it reality. Granted, we were 10. The first disagreement we had led to me dumping him, even though he swore it was "just another kink in our chain". I was a dramatic child :P
Anyways this is really cool and brought back a lot of great memories :)