There was once a semiconductor company with a simple, successful strategy: To make all the chips inside a PC except the microprocessor and the memory.
Starting with HDD drivers, it moved on to CRT drivers, keyboard controller ICs, chips for video, chips for wired and wireless communications and CD-ROM drivers.
The company did well, and grew to half a billion dollars in sales.
But then Intel started to integrate many of these functions onto the microprocessor, and some functions became commoditised, and the company's fortunes waned.
MORAL; Don't put all your eggs in one basket.