I agree with the sentiment, but you underestimate the level of engineering, coordination, design work, testing it is to do this.
It is admirable that they even have a half-decent browser, but to compete at the top you need soooo much money and motivation.
I’m guessing Ladybird will prove you wrong in due time
Ask 60% of their (Chrome, Edge, Safari) userbase, and they won't even be able to tell you what their browser is called.