[grondilu]

If a company ends up being the only one providing a product or service on a market, there is nothing wrong with that, as long as other companies are not prohibited to enter the market if they are capable to. And I repeat : you have no right to prevent people from working together if they want to. It's none of your business.

If you're upset with a company dominating a market, just create your own company to compete with it.

[brazzy]

Yes, there is a lot wrong with that, as there are often significant inherent barriers to enter a market, and lots of things an incumbent can do to hinder competition, not all of which can be made illegal.

And a good government has every right to prevent this situation, that is exactly its business.