Why Some Start-Ups Are Called Tech Companies and Others Are NotA new generation of so-called tech companies that deliver food to your door or help you get a ride in a car — but don’t look much like an operation that makes computers or phones or software — might be putting a modern spin on that old story. No doubt, they use technology in their businesses. And many of them wouldn’t exist without the development of smartphone apps and ubiquitous Internet access. But these days, every company is at least a little bit of a tech company. Some Wall Street banks employ more tech workers than all but the biggest Silicon Valley companies. And large manufacturers like General Electric are leading the way in efforts to put Internet-connected sensors on things as varied as streets and turbines.