I agree sharing passwords is a really common thing, even among corporate / enterprise SaaS. Even with MFA people share dongles / code pads.
But the correct pattern is a formal system for delegation and/or disconnecting 'login' with 'account' (i.e. separate charging for a service from the login). This is something that AWS does very well for example.
But the correct pattern is a formal system for delegation and/or disconnecting 'login' with 'account' (i.e. separate charging for a service from the login). This is something that AWS does very well for example.