Businesses are roughly split into only two camps Ubuntu or redhat as they have established business support. So lots of software and drivers and hardware will be tested against Ubuntu, as it’s free

Ubuntu is also seen as the user friendly first entry into Linux and people who use a Debian based distribution are likely to stay with Debian derivatives rather than re-learn things on the red hat stream.

Seeing how low Linux desktop market share is, I don’t think it matters to the Linux community which is used, more important that market share increases

Because my company has a contract with Micro$lop, and they have a bunch of malware that only works on that piece-of-junk Ubuntu

umm i think that people are using Ubuntu because of stability and community, and also people get used to of that now even if they try to use some other os they wont be comfortable, there are alooot of different better OS but for those people ubuntu is like their favorite food , I use arch BTW