Considering I gave you multiple opportunities to be anything except a corporate apologist and you're basically shilling for OPEC+ (a cartel), Comcast (a monopolist in most areas), and landlord corporations, I'm going to file you with the rest of the "right-wing libertarian" fun bunch.

Markets aren't naturally competitive. That statement is borne out through centuries of history as well as the philosophical texts that capitalism is often said to be founded upon.

It's one of the government's jobs to keep markets competitive through anti-trust enforcement, consumer protections, and other items in their rule book (anti-price gouging laws, preventing giant, harmful mergers, anti-usury laws, etc). The reality is that they haven't been really doing this job since the days of Reagan.

You have a lot of need for proof from others for their stance that greedflation exists, but I'd like some proof that these markets are actually functioning well without government intervention, because as a user of these markets I see very little choice, very little "innovation" at all, a lot of rising prices, and a lot of quarterly calls where people in these industries are bragging to investors about being about to achieve record profits.

QE forever does explain the recent weirdness in the housing market, because it's one of the only areas of the economy where Joe six pack can buy a mostly leveraged asset using funds from big banks, but it does not solely explain why rent prices keep soaring despite landlord's costs not really rising in many areas. It also doesn't explain many, many other inflation scenarios.

EDIT: Also, raising prices due to greed does not have to be coordinated in the shadows like you're saying. A lot of c-level executives talk on their quarterly calls about how "there's still an opportunity here for us to raise margin" and "the market is still indicating that the higher prices can be absorbed by the consumer" and such. It doesn't take smoky backrooms to look at the environment you're in and say "Hey, I think I could raise prices right now. Why not? Everyone else is doing it and blaming it on inflation".