Not another shub bashing thread
It's quite simple really. VM are a business, and they have come up with a good all round modem/wifi router that suits mast peoples needs, and is probably cheap for them to buy (remember the customer gets it free). It wouldn't make good business sense to go for one that is 4x the price, as it would be far more than most people need, and would lower profits.
However for anyone who finds that the wifi router isn't powerful enough, then they have the option to use their own.
If you want the best, then you have to pay for it!!!!!