So, I have an advanced degree in finance, and spent 12 years of my life advising people on small business income. I have read Ramsey's Books.
The Nintendo thing, he is telling the story of Iwata. Taking the pay cut After the Wii U launch and they knew 3ds and Wii U were in trouble compared to DS/Wii era.
As for Ramsey's advice. If you can not afford or have access to a financial manager, Ramsey's books offer some good insight For basic.
To some Up Dave Ramsey theory in A few sentences. "If you are able to purchase a home, it is your single greatest expense in your life and your biggest investment. Due to the crippling interest that is a mortgage, put every single extra penny into the mortgage to pay it down as quickly as possible. Live below your means, and extreme Budget until your home is paid off. Then allow Yourself buy nicer things, vacations, nicer cars, etc. Also you must always have an emergency fund."
That is Dave Ramsey in a nutshell. He is not wrong. Most people do not have the debt free education, disposable income to invest, or other revenue streams. Paying your home first is a good idea in theory. Again, as some of you have said, it works and it doesn't. He made $10's of millions on these books and his podcast network and books is worth somewhere around $500 million last I checked. BUT…he made and lost his money several times in real estate speculation, long before the books. He is a self made guy, but initially, somewhere, somehow, someone gave him the income to get into real estate speculation. So, not completely self made. Things to keep in mind. Both sides of the coin as it were.