So this diagram is really frustrating as it makes me want to reach a conclusion (wtf, what an unnatural difference) without giving me enough information to know anything.
It would be like showing that household grocery costs decreased while disposable income decreased and then writing an article about the relationship between those two while not revealing that rent increased at the same time.
In general, I don’t know if they answer properly if profits increased because of inflation or if inflation increased because of inflation. Since the cartel existed before the shift, I would like to know what they think made companies suddenly get greedier.