Presumable, services like pluralsight and terakepak need to continuously handle the infrastructure that enables you to use it sporadically and this is what you'

Presumable, services like pluralsight and terakepak need to continuously handle the infrastructure that enables you to use it sporadically and this is what you're paying for. However, this is entirely possibly for SaaSs to do if they use multi-tenant infrastructure and shift the majority of the cost to those using it continuously. Amazon lambda (https://aws.amazon.com/lambda https://aws.amazon.com/lambda) would be another option, as it allows one to spin up infrastructure on the fly as it's used, but this would require the SaaS to build and take advantage of it.