Cheap alternative to pricey flat tappet oil in street cars...

Has anyone considered the possibility, that the problem of wiped cams is not so much the oil, but the quality of the parts (cam, lifters), themselves? I have never run a roller cam, only flat tappet cams, in every thing from small blocks from all three american auto makers, to big blocks, and six cylinders. I have never wiped a cam lobe. I also have not run any cams that have been made in the last 10-15 years, except one, and it does not have enough time on it to be relevant. I do a proper break in, then just use store brand, 10-30 oil. I am running one cam at the present time, that was installed in 1979, in my 170 slant six engine, and I turn that engine about 6500 Rpm.