In US you have the antitrust law in France we have the anti packaging law.
This law just said that you can not sell 2 products together without selling each products.
In France, you can only found PC with Windows on it and a lot of constructor do not allow consumer to buy PC without it. So we have a petition to warn our country about this issue who do not let a change to other product of the market. The cost of software installed on your PC is about 20/25% of the total cost. This not only for MS windows, you will have a lot of installed software
So you can sign the petition to stop this bad practice which make price expensive and do not let the choice for your software.