You have very skewed perception of how a company like GM operates. The incentives for managers are pretty short term they have 0 incentive to do a project that

You have very skewed perception of how a company like GM operates. The incentives for managers are pretty short term they have 0 incentive to do a project that might pay off 5 years from now. In deciding on how to allocate capital there is 0 chance they will allocate it to doing high risk long term project vs doing a bigger truck now that they will sell next month at some ungodly margin.