Most companies pick processors on the market rather than in-house because they can’t afford to pay to divert money to boost processors, rather than spending that money properly, might help them build up the customer base.
Even if they are profitable in developing one, the performance would generally be unsatisfactory to lack of journey in the field.
Samsung, Huawei, and Apple boost their personal processors Exynos, Kirin, and the renowned A -series because they should find the money for the R&D charges and are ready to make more than a thousand to improve their products. In return they decrease the fee of producing processors as in contrast to buying them from the market, from groups like Qualcomm and Mediatek. They sell them after having their share of income from it, increasing the fee of the product.