There’s approximately 0% of people that actually need Gatorade/sports drinks, unless they were stranded without water for a prolonged period.
It was developed to help football players in Florida stay hydrated for the duration of a game. The conditions there are 90%+ humidity, and 80+ degrees while wearing full pads. Then being in that state for about 5 or so hours without eating.
No one really is exposed to that level of perspiration except athletes.