There is an extent to which the people who make decisions at a company have to believe they are right. You would never get anything done if you didn’t. There does, however, seem to be an elevated level of hubris at the largest companies in the world–almost all of which are tech companies.
There seems to be a belief that if you make unimaginable sums of money selling software, that software must be a net good for society, and–therefore–your ideas about what the world needs must be right. When that becomes the norm, the people inside your company stop bothering to tell you when they think you’re wrong, or that you might be about to ship something problematic.