I mean, go to a different doctor if yours somehow doesn't know about it. Mine all have. They help account for it by sending folks home with a blood pressure machine hooked up, which you wear for 24 hours. It regularly measures blood pressure - every 15 mintues, IIRC, including at night. In the US, I had a doctor suggest I take it outside of the office regularly so that we could compare. I worked at a pharmacy, so just took it there.
"Pharma companies" aren't there to get on never-ending prescriptions: Curing things gets them fame too. Plus, the "big pharma wants you sick" conspiracies seriously leave out all of the pressure to not have folks on medications for life. Single payer health care plans, governments that administer them, private individuals, and for-profit health insurance companies all would rather not pay for it. I'm not pro big pharma, but I'm also too prudent to believe this.