It’s possible if that’s your goal, but then you have to limit yourself to the devices that work with that particular platform. So it just comes down to your own needs and preferences.
I started out trying to stick to one platform but then found it just didn’t meet my needs. At this point I have seven or eight different ones, but it doesn’t make any difference because most of them, like the sprinkler system, also work with either Alexa or HomeKit. I really only need to use the other platform app to set up a new device or set up a new schedule.
I recognize there are some people who find it psychologically uncomfortable to have multiple platforms, and if that’s the case, they need to go with a platform that will meet their needs. Matter should help all of this in a year or so. 