You claimed that nobody else was able to get so close to the edges due to Apple's patents. I was pointing out that Samsung already gets as close or closer to the left/right hand edges before the X was even announced.
While they didn't go fully to the top or bottom, that doesn't alter how the technology itself would work. If they can get close to the horizontal edges, they can get close to the vertical edges.
You might want to check the reason for the limitation before making such comments. A display can be stretched to the three edges of the phone —- it is the fourth edge that is the problem — as Xiaomi demonstrated with Mi Mix 2. At least some space is needed to house the display driver, camera, sensors etc.
No particular need for the bandwagoning. You're the third person to point this out, one three hours ago, one an hour ago, and now you in the last two minutes. Hard to believe you didn't see the other two comments before replying.
The issue, specifically, is that the display ribbon to connect it to the board needs to go somewhere [0]. For years, it was the bottom. So when it comes to removing a chin, you need to find a place for that ribbon. Apple achieved this by folding the screen at the bottom, so the screen isn't technically ending at the bottom. This is why it's easier to stretch out screens to the sides and the top.
While they didn't go fully to the top or bottom, that doesn't alter how the technology itself would work. If they can get close to the horizontal edges, they can get close to the vertical edges.