Intimidating to install and then an unfamiliar interface and applications.
It might be more accepted if it came preinstalled and simply had a browser like Chrome and an app store, where all the other ‘helpful’ but confusing apps like Libre office were kept out of the way.
I install it for my family and it would only be accepted if it looked and worked just like Windows or MacOS. All they really need is a browser to get to GSuite or Office365.