If they are able to take higher price with only the brandname why shouldn't companies be allowed to do that? Also maybe there are some other issues at play wit

If they are able to take higher price with only the brandname why shouldn't companies be allowed to do that? Also maybe there are some other issues at play with precision, calibration and/or taking higher voltages/amperage? Or just not blowing up if you try to measure the wrong circuit with way too much power?