I can't speak for others, but I can speak for myself.
My venture into windows 8 tablets started with an RT device. I was happy with it for about a week. Then I needed to print out something. I was lazy at the time to do so from my desktop, so I tried to print from my RT device. Couldn't find a printer driver for my new Samsung laser printer.
So, I called Samsung tech support. Told them the model of my printer and specifically emphasized that I had an RT device. The tech support guy linked me to the driver download page for windows 8 driver. I politely and calmly told him again that I had an RT device and that the exe file he linked me to wouldn't work. He said windows 8 and RT were the same thing and so the driver for 8 should work for RT. Again, very calmly and politely, I explained to him that the two run on different processor architecture. One is intel and the other ARM. He continued to insist that all I had to do was double click the exe file because RT and 8 were the same.
I got a little frustrated, so I asked to speak to another tech. So, another guy came on. I explained to him my situation very calmly and politely, that a driver compiled for windows 8 would not work for windows RT. I was looking for one for RT. He proceeded to explain to me (tried as best as he could to use big words... um... I'm an engineer...) that the only difference between windows 8 and RT was the name. He even tried to compare it to windows 7 home edition vs windows 7 pro.
I knew I wasn't going to get anywhere with them, so I played dumb, thanked them, and hung up.
I then emailed Microsoft support. Emphasized several times in my email saying my device was RT, NOT windows 8. Promptly got a reply from a tech dude linking me to the driver download page for windows 8. I emailed him back and reminded him that my device was RT, not windows 8.
The next email from the MS support was jaw dropping. He replied telling me windows 8 and RT were the same and that a driver for one should work for the other.
Shortly after that reply, I got another one. This time, he suggested perhaps my printer wasn't supported by windows RT. So, I'm guessing he caught onto his mistake or someone told him after he sent out the previous reply.
I promptly returned my RT device right after that. It wasn't because I couldn't print from my RT device. It was because if 2 Samsung tech dudes and 1 MS tech dude thought RT and 8 were the same, then RT is dead on arrival. Why? How could it possibly get the support it needed if nobody knew it was different than 8?
Don't get me wrong. Windows RT was great to use. I loved it. It's weakness, however, is it too closely resembling windows 8. If you look at the reviews of RT online, most criticisms revolve around the fact that RT couldn't run legacy apps. These numbskulls couldn't get it through their heads that legacy apps were compiled for intel architecture. When the ipad came out, nobody complained about it not being able to run macOS apps. Why? Because everyone understood iOS and macOS were different animals.
To this day, people still have trouble understanding that RT and 8 were different. All they to repeat and hear is that RT is a stripped down version of 8. This is not true at all. It's just different architecture.
RT is just not meant to be successful.