A good equipment is a must for any professional photographer. However, a good equipment may cost you a hell lot of money.
While your pay per job may be satisfactory, you must be expected to spend a large portion of it into investing in new equipment. They are really very expensive if you want the best, but since the customers want the best, you will need them.
It also means that you need to maintain your equipment well. For example, if you drop your camera on the floor, then say bye-bye to it and also your money.