Think of it like a sprint versus a marathon. If you run at full speed you can get farther than someone keeping a steady pace in the same amount of time, but you’re going to tire yourself out and become slower. You’ll lose in the long run despite looking very “productive” at the start.

Similarly, have you ever been “in the zone” and worked non-stop on a fun project, being super-productive for a full week or even multiple weeks, but then “crashed” (or even burned out) and your output got worse?

New companies are on a race against the clock. At the beginning everything is a cost, you’re constantly losing money. So you plough through to survive until you become stable. Then you need to scale back and take it slower to allow yourself to recuperate and keep going.

Also, keep in mind that small companies can often be very productive simply by having fewer employees and “red tape”. You can have an idea, send a message to someone else, get an immediate OK and get going. When a company gets too big and has lots of processes to keep things running, a lot of effort is wasted on even getting started.