I don't even...
You are aware that Steam takes a straight 30% cut on all sales through their platform?
This means, out of the 40$ that you pay on steam, only ~28$ go to the publisher/developer. This is standard practice, physical copies in retail stores have an even lower profit margin.
If they sold keys for that price to key sellers, making the exact same amount of money in the process, the sellers selling the game for 32$ are still making 4$ of profit on every purchase.
Edit: GoG is no different in that regard, in case that's not clear by now...
And how much do you think Fanatical/WinGameStore take/pay for keys? You think they pay the same as steam and still sell the games for 20% pre-release? All this does is hurt game revenue and the backers in the longterm. I'm curious if Paradox pushed for this. I don't remember seeing previous HBS games on such discount reseller websites at launch.