Because being deliberately inefficient in order to give more people jobs is a slightly concealed case of the broken window fallacy; so all the same arguments apply.
Basically, when companies do that, they're engaging in a form of welfare, but it's neither fair (because of differences in implementation) nor efficient (because it involves wasted labor). It's fairly obvious that it would be better to have the same people who wouldn't be employed if not for inefficiencies, employed to work on something else efficiently - even if it's public projects, for example - and pay them by taxing the increased (due to higher efficiency) output of the original company.
Basically, when companies do that, they're engaging in a form of welfare, but it's neither fair (because of differences in implementation) nor efficient (because it involves wasted labor). It's fairly obvious that it would be better to have the same people who wouldn't be employed if not for inefficiencies, employed to work on something else efficiently - even if it's public projects, for example - and pay them by taxing the increased (due to higher efficiency) output of the original company.