It is true that maintaining a business isn't easy and that's why a business that's already seeing its peak should maintain its consistency. That's all that matters in most businesses because even if you're the best right now.
But, you're not consistent in what you do like marketing, customer support and innovation then you're going to be the last someday if you're not able to maintain that. Especially for these businesses that requires continuous upgrade and innovation, they'll be left behind if they don't accept that fact.
Nokia is a testament to that, a corporation that has always been a leader in phones has been killed by competitors because of its refusal to innovate. In fact, maintaining a business is not simple, it includes hundreds of different factors, not only capital management, planning, poor customer care support...Nowadays, every field will have extremely fierce competition, so opening a company or business is simple but maintaining it somehow is the problem.
There are many people who always say that there is no fairness in business when the director is paid dozens of times more than the workers. But we can see that to run and find a way to survive for a business is an extremely difficult thing, not everyone has the courage to do it.