This ongoing debate on productivity at small startups vs large companies will never be resolved by argumentation. But as we can see from this thread, corporate engineers overwhelmingly outnumber early-stage startup engineers. Therefore, they tend to "win" the debate by being louder.
The other thing about big corps is that they work on stuff that actually matters to customers for a long time, not "Our Incredible Journey" demo software intended to be rug pulled as soon as the founders get acquihired.