No. Companies like Herbalife, Amway, and a host of makeup and fashion distributors sell more than $3 billion per year in UK. I think stats show about only 3 or 4 % of those presenting 'a business opportunity' actually make a decent living from it. Some dated info here: https://www.foreverknowledge.info/blog/the-uk-ranks-in-the-top-10-in-the-network-marketing-industry/ The author of that book will probably make more than most of the MLM friend-busters!!
I worked within one of those industries for a very short time. Full of smarmy marketing types that are so pleased to meet you, they've just cum in their pants. They're an unethical, albeit legal, pyramid scheme.
