There are four different apps that are part of Substance 3D. The one closest to Keyshot would be Adobe Substance Stager. That's the one I'm referring to mainly. It's very easy to use, has an enormous library of assets included free, and has a less convoluted interface.
People use Painter and Designer but does anyone actually
use Stager?
Professionally? KeyShot is also very easy to use and has a fairly vast, free asset library (KeyShot Cloud). Compared with many other software packages, the KeyShot interface is far from convoluted. How much easier do you need it to be?
Stager has no animation yet, but I'm betting it will before too long and it won't be as clumsy as Keyshot's is.
This is just pure speculation on your part.
Adobe may not steal many longtime Keyshot users, but it might take away future ones if given the chance.
I would agree that could possibly be the case
if the Substance products were part of Adobe CC, making it easy for someone with a subscription to download them, try them and begin to use them. But they aren't. With a subscription to the the top tier Adobe CC plan (Creative Cloud All Apps), you don't get access to
any of the Substance stuff. If you want those, you have to pay more for a second subscription. If you have to pay more, there would be no reason not to investigate other similar software that's not made by Adobe.