When I buy electronics (e.g. Macs) from Costco, I get an extra year warranty for free. And the device is always less than what I can get it directly from Apple for with only a 1 year warranty.
So your belief that an extra 1 year of warranty coverage will cost companies extra $$$ is a load of B.S. It just doesn't hold up.
Now, if a company puts out shoddy products that they only expect to last 1 year before failure (as measured by MTBF or MTTF), they it will cost them extra. But that's their fault for releasing low quality products to begin with that end up in our landfills.
Have you really thought this through?
Let's say 150 million mobile phones are sold each year in the EU. Even with a low failure rate of 1% in the second year, it would mean 1.5 million phones would need repair/replacement each year.
It wouldn't cost the producers anything?
Even with a MTBF of 10 years, some devices will still fail on day 1 and even more on day 366-730.