Whether “Power BI Pro is a tool for amateurs and Power BI Premium is a tool for pros” is true or not is debatable. What is not debatable, however, is the fact that we need a dev/test environment where we could harden our models without having to affect our production environment. Power BI Premium is expensive and not very flexible for sizing up and down after you factor in all the governance and controls that companies set up around it.
The answer to how you can get an environment that can be easily spun up, sized up and down and paused when not needed is Power BI Embedded.
In my video I go over this thought process as well as the steps necessary to create a Power BI Embedded Dev/Test environment for your organization.