Depending on where you live the likelihood of your ISP doing something exceptionally nefarious might be way lower than some random VPN client someone finds on an appstore.
As garbage as most US ISP options are, I'd trust them long before I trust random VPN services. And I can be reasonably certain that my physical connection goes to Verizon. My virtual connection could be going anywhere and I just have to believe that it's to people who are who they say they are.
You’re just trading one for the other and that new one might not even have to follow the same laws.
any VPN worth its salt has a business model built around not logging data and not selling data. Your ISP on the other hand, is in the business of selling you internet access. Your data is a secondary revenue stream for them.
They two are not equivalent.
With us technical people it's more likely, but not necessary for others that may have just heard 'use a vpn' and went to the App Store, searched for 'vpn' and prepaid 3 years.
Hide my ass VPN is still up - https://www.hidemyass.com/en-us/index