Also learn your timeline, Steam isn't even 10 years old yet, let alone 10 years behind Origin which is a re-branded EA downloader which has existed since 2006. that's right a whole 2 years behind the 2004 release of Steam. get your facts right.
The problem is that Steam is better than Origin so Origin feels redundant. If Origin were better than Steam, people would be more open to it. Same with Uplay. Granted, Steam has the inherent advantage of being the most popular so most people are already invested in it. I have over a 1000 games on Steam. Many people want all their games in one place, so I can see why anything that splits their library would be unappealing.