This is almost always true. But this is also how a new company inevidently sprung up and eat your lunch. Everyone knows photoshop is bloated and slow, they have

This is almost always true. But this is also how a new company inevidently sprung up and eat your lunch. Everyone knows photoshop is bloated and slow, they have all the money and industry knowledge in the world, why didn't they come up with figma. Maybe it's a bad example that adobe ended up buying figma, or it further proofs the point that don't bother rewriting, buy your competitor instead. If you can buy your competitor, then there is no innovator's dilemma