MediaTek is only suitable for mid-tier phones (at least when I was in the OEM industry). Exynos is only for Samsung. A lot of OEMs try to make their own LTE chips, but it's not easy.
Qualcomm is still very much relevant in the phone industry.
Qualcomm is still very much relevant in the phone industry.
I think there are plenty of radio modem makers/competitors now. It's not to say that it's easy to make your own chips, but the real problem here is that Qualcomm does not believe in licensing their wireless patents to baseband makers. Qualcomm wants to collect royalties from OEM's customers instead for greater licensing fee.