Comment ‘ideas’ to get a list of 137 most profitable business ideas in a PDF with a full breakdown for each niche. When the economy takes a hit, most businesses struggle — but these 17 recession-proof businesses keep making money. They’ve weathered every financial storm, proving that with the right niche, you can build a business that’s stable, even in hard times. Revenue data comes from the U.S. Census Bureau, industry federations, and key corporate reports. For more niche industries not includ