Safety regulations mean that car companies want to deal with other big companies, or those with big enough insurance.
Buyers don't buy based on infotainment.
What makes you think it "sucks" for the majority of buyers? Have you spoken to normal drivers to see if it is something that genuinely bothers them? If so, how much more would they be willing to pay for a better infotainment system?
Finally, who actually buys cars? Most of them are fleet - not individuals.