Why not blame both? Pharmaceutical companies did in fact knowingly take actions to increase abuse potential because it made them more money.
https://www.google.com/search?q=pharmaceutical+companies+lob...
This is specifically relevant because studies have shown lower opioid use in states with medical marijuana. For example:
https://journals.lww.com/jaaos/Fulltext/2021/02150/State_Med...
Now, everyone in med is 'deeply concerned' with abuse, that many people with legitimate pain are being denied access. The Sacklers lied about addictivity - seriously, how did the FDA allow a morphine derivative to say 'non-addicting'??? But it's also the whole medical establishment's fault in thinking that all pain should be extremely restricted.