Assuming all businesses worldwide have at least one thing in common, being; create added value. Does that then imply that even fundamentally different businesses can share some universal learnings amongst themselves?
Yes, but depending on how different the businesses are, the learnings may be very limited in number.
One universal principle that never goes out of fashion, though, is customer-centricity. Buzzword bingo aside, putting your customer first, anticipating their needs as much as possible, and providing stellar service is always beneficial for every type of business.