There are movements towards making these. It's an integrated SW+HW stack problem and Apple has had years of leadership on that space. Times are changing.
What you would see in the past are "PC or Android with a tablet manufacturer's sticker on it". Wacom has a history of occasionally licensing their stuff for a laptop. And XPPen, for example, has made a few in the "Magic Drawing Pad" series now and they needed a few iterations to move away from being a generic OSI tablet to actually using their digitizer tech. These products don't excite tech enthusiasts - a fully integrated device, as opposed to screen and digitizer, comes with more concerns about all-round performance and value - and so far, the premium on them makes them compete with iPads. But there is tremendous demand for it - seemingly every "art kid" sees an iPad and Procreate as a milestone, because that combination is what the content creators they watch are using.
Are they? The iPad is in it's 15th year now. Apple has shown exactly what needs to be done yet there isn't enough interest in the open source community to develop (or sponsor development of) a solution. I don't see much evidence of change.
> because that combination is what the content creators they watch are using
But also because it's the best hardware and software and can be relatively inexpensive, especially if you are willing to buy used.
What you would see in the past are "PC or Android with a tablet manufacturer's sticker on it". Wacom has a history of occasionally licensing their stuff for a laptop. And XPPen, for example, has made a few in the "Magic Drawing Pad" series now and they needed a few iterations to move away from being a generic OSI tablet to actually using their digitizer tech. These products don't excite tech enthusiasts - a fully integrated device, as opposed to screen and digitizer, comes with more concerns about all-round performance and value - and so far, the premium on them makes them compete with iPads. But there is tremendous demand for it - seemingly every "art kid" sees an iPad and Procreate as a milestone, because that combination is what the content creators they watch are using.