Both Qualcomm and MediaTek have gotten greedy. It’s not the chip shortage or whatever as other people have been suggesting in your other post (that I also saw). At least Qualcomm seems to be making some progress now with their newer processors. MediaTek has gotten incredibly lazy and they’ve been rebranding old SoCs as new SoCs. Looking at your other post, you seem to have high expectations for the price. There’s no phone with stock-ish Android, newest SoC, root-ability and widespread custom ROM support, at least at 15k. Mobile phone SoCs have made almost no progress, except at the flagship end. And just now is the performance trickling down to upper midrange and mid-range lineups. The Snapdragon 7+ Gen 2 is a great example of this.
MediaTek has been rebranding their mid-range SoCs since at least 2020. For example, the Dimensity 900 was rebranded to Dimensity 920 and then again to the Dimensity 930 with some overclocking. This was then rebranded to the Dimensity 1080 with more overclocking. Now, the Dimensity 1080 is rebranded to the Dimensity 7050 with a minor overclock again. The roots of their current midrange SoC is already about 3 years old. They’ve been doing the same with their other lower end SoCs too.