From wikipedia for those, like me, that don't know about ISO27001 :
ISO/IEC 27001 requires that management:
Systematically examine the organization's information security risks, taking account of the threats, vulnerabilities, and impacts;
Design and implement a coherent and comprehensive suite of information security controls and/or other forms of risk treatment (such as risk avoidance or risk transfer) to address those risks that are deemed unacceptable; and
Adopt an overarching management process to ensure that the information security controls continue to meet the organization's information security needs on an ongoing basis.
A lot of healthcare facilities are running EOL operating systems like Windows XP or Windows 7 because the programs they use for billing or other reasons are stuck on that version. You would be shocked at how prominent this is across most "modern" infrastructure. The resistance to change stems from a "if it isn't broken, don't fix it" mentality. Pagers are still the most reliable ways to reach a doctor, which is why they're still used, not because they're necessarily the most secure.
As easy as it is to point blame at "duh boomers" the situation with healthcare in particular is much more nuanced. Though I do agree that any luddites in charge of major hospitals are not helping the situation at all.