The robots are coming, and they are not just robo-advisers, driverless vehicles and assembly-line welders. What’s more, there are profits to be made by discerning investors. Venture capital firms — including Playground Global, FoundersX Ventures, of Y Combinator and GV — are among the more than 40 VCs raising money from high-net-worth individuals and families and bankrolling a rising tide of robotics companies that are designing and manufacturing everything from autonomous drones and warehouse carts to vitamin-size “pill cameras” and surgical assistants.