Not getting into an arms race against hackers is a sound business decision, unless you have a very good profit motive to keep them out.

Maybe the devices are loss leaders and you can't afford to have many users not following up with purchases from you. Or maybe you are at risk of being sued over some shady licensing deal if you don't lock down. Or someone like Microsoft bribes you to lock out competitors. Or maybe you're just a control-freak asshole company.

Or a mix, like Sony.