Yeah, or more specifically a company might have the competence but will not waste their engineers time, because the reason they’re using the service in the first place is to not have to focus on their core business. Not random accessories.
A lot of time, circumventing a license check would be more work than - say - implementing sending email on their own. Depending on what the service is.
Developers think they’re selling fancy tech. Most often, what we’re selling/providing is convenience - something boring that just works.