Ah interesting. I don't think I'd agree with that because if all competition is nuked and prices are nice today, it's still a lot harder to rebuild a healthy ecosystem if/when it gets abused down the line. Whether intentionally or through stagnation.
I'm not saying we should look at just one or the other, but both should be weighed and considered.
In Australia we actually have a bit of a problem with a supermarket duopoly, who have apparently coincidentally both decided to sell house brand milk very cheaply (IIRC $1/L). This has upset a lot of farmers and producers as it decides a large amount of their revenue. I'm not sure what our legal landscape dictates, but it certainly seems unfair and anti-competitive even though it is really good for me personally.
https://en.wikipedia.org/wiki/The_Antitrust_Paradox
In fact Apple lost the iBooks case between it and Amazon because while it was more fair to publishers, it raised prices for consumers.