Only for lease-ops. Company drivers get their trucks equipped with APUs at the company's expense.
You will be asked to pay for load locks, chains and a lock set on the reefer side - and the flatbed crew has their own equipment you'd need to pay for as well. Payments can be arranged with your FM to take the sting out of it. If you leave the company, this stuff can be turned in for credit.
Now this may sound a bit mean, but it makes sense - many drivers will take company-provided equipment and sell it at the truckstop. Then, they go back to the yard with a story that runs "I lost it." They get more equipment, head back to the truckstop, sell it...
The amount of equipment that was lost and replaced dropped markedly after this policy change.