Getting a PhD is almost never worth the foregone wages if your goal is to be in private industry. For sure, people should get one if they are interested in research, or specific jobs that are only available to people with PhDs. But otherwise it isn't something to get into half-hearted.
This is only true when you compare the PhD field degree to something like finance where you can make real money at 23 years old. If the alternative is a bs for a path where most people end up going PhD, you will be working for like $20/hr most your life. You will probably be breaking even with what the PhD stipend would have been anyhow and you aren't getting any healthcare benefits.