Don't think private medicine companies are such a bad thing - there can only be so much research that is publicly funded and we can potentially miss out on some life saving drug not getting developed.
Imo a better solution would be decreasing the patent age so that the companies have only a small window to generate profit, after which the drugs would go into public domain. 20 years is way too long to profit of a discovery
To add, I think the batter capacity of a fairphone is 3905 mAh while eg Pixel 7 has 4355 so the diff is only ~10%
If I can replace a battery without throwing away the phone, I'd definitely be OK with 10% battery reduction