If a chip is easier to develop software for, one might even consider paying for a higher per-unit cost chip given software development time savings. SiFli chips are custom-made to be the primary chip in smartwatches. SiFli chip SF32LB52x has over 512K of SRAM, 16M of PSRAM, has a dedicated MIP peripheral for our display - cutting out the need for a separate FPGA or expensive dedicated display interface chip like Epson.