I mean there are alternative models. Lee Kuan Yew from Singapore famously opposed the "helping the bottom kids at expense of the top ones". Is it really the right thing?
Some are good but then think about it this way, most of them look forward to leveraging debt. Which easily puts them in a position, (with for ex. the current high interest rate environment), in which they are trapped.
And ^ above we're just talking about the ones that seek long-term investment. The ones that look for a quick flip in 6-10 years? Hard to trust them
The FDA only cares about outright, immediately dangerous things. See how long they delayed with asbestos and thalidomide. Over long time frames, you are on your own
See my sibling comment, but it is hard to quantify how much cash costs because a lot of the costs are indirect or infrequent capital costs. Things like employee time, and money handling equipment. It will also vary enormously based on the scale and nature of the business.
A small coffee shop can get by with a $129 cash drawer hooked up to an iPad and a manager spending a few hours per week counting money and visiting the bank. A large store like Walmart can easily spend $100k+ on all of the equipment for cash handling in addition to having to contract with an armored car company.