This is nonsense. Most Western nations fully respect IPR and patents.
There is nothing wrong with patents "promoting the Arts and Sciences".
The problem in the US is that your largest buyers (Medicare, Medicaid, VA, Tricare) aren't allowed to properly use their buying power to push pharma companies on prices.
At the same time, there's very little restriction on pharma companies advertising directly to patients (banned in most nations) which puts pressure on GPs and specialists to over/off-label prescribe unnecessary pharma.
Prices in most countries are cheaper than the US because of that buying power that the government has, along with independent assessment of the value of new drugs and treatments in terms of QALY and cost/benefit to the people.