
If VPN services are an online security tool very appreciated by its users, this may not always be the case for other parties involved - like your ISP or government, perhaps. Consider Russia currently blocking more and more VPNs or Netflix's increasing efforts to prevent these services from unlocking foreign catalogs.
Their ability to bypass streaming platforms' geo-restrictions or online censorship enforced by authoritative regimes across the globe is exactly what these organizations and/or authorities are trying really hard to stop.