Picks-and-shovels investments can be very rewarding. Buying the stock of the company who sells the basic equipment a booming industry needs can be lucrative. The problem arises when the industry fades. That is where ChargePoint Holdings (NASDAQ:CHPT) finds itself.It is the leading provider of electric vehicle charging infrastructure but faces declining sales as demand for battery EVs gives way to consumer preference for hybrids. A public charging network is less critical if you can use gas to where you want ...