Not entirely on topic, but sometimes I wonder what would have become of companies like Google and Facebook if they never went public. I realize that the extra

Not entirely on topic, but sometimes I wonder what would have become of companies like Google and Facebook if they never went public. I realize that the extra capital helps them better expand and compete, but does every startup have to aim to take over the world? What's wrong with just providing a useful service to society and having enough revenue to cover your expenses and grow at a modest, organic pace without having to compromise your values?