Look, my last set of tires cost $1000 (and that was before COVID). They might last 50K miles. How much do you drive? There is no way that new tires plus replacement is going to be $7.50/tire. Even a unicycle isn't going to have a $30 tire.
It appears we should be able to make appropriate compound if that were our top priority. It just sint
However, if someone invented a product that would result in the consumer needing to spend more money on 'safe' tyres or whatever, just watch the legislation and (artificial) public outcry demanding it.
I'm sure there are tons of other examples. Outside of highly regulated areas, improving safety usually plays second fiddle to lowering price.
https://www.cpsc.gov/s3fs-public/CORT-Statement-on-Table-Saw...