Yep, that is correct. They will need it! Even though you bought one of these expensive beauties a fact is that like everything else, they will die. There are actually weeks when we have more Apple computers on the tables than PC´s and we have seen that they need the same sort of care as normal PC´s do. They are good but not immortal.
If you need the system updated, we can do it. We can upgrade a 2009 unit to run on Mojave but it will require some more RAM and preferably and SSD-drive. (YES, we upgrade these every now and then.)
We can also switch hard drives or other parts from every single computer out there on the market so just bring your MAC to us, and we will bring it back to life.