I'm sure that Jerry doesn't have RX7 and is simply offering an opinion without any basis for it. If you haven't used it, don't knock it, Jerry. Conversely I have RX7 and have experience using it and using to repair files, like clipping, click tracks, crowd noise and other external anomalies. It is amazing.
What RX7 does is by scanning the area (and that takes a fair amount of time, a one hour file might take 20 minutes for a scan), it then extrapolates what the wave curve should look like if there was no clipping, which also takes a lot of time (again, a one hour file might take 30 minutes to repair). It then lowers the gain and restores the high points to the wave file with full dynamic range.
I get it that it is a educated guess on the part of RX7, but it is designed and sold to address this specific problem. But RX7 is amazing in all respects, but it excels in clipping. Let's just say that it is way better than simply lowering the gain as Jerry suggests. Software Engineers that make a lot more money than you and me times 10 with college degrees in this specific area developed it, and the latest version (I have 2019) is amazing. I also get it that it is stupidly expensive, which is why most people don't bother purchasing it, and simply criticize it.