How much does anyone want to be the reason that the 1080p survey results are so damn high is because the vast majority of people can't or won't spend the ridiculous amount of £££ that is necessary to game properly at 1440p?
We here are the 1% essentially. Look at the survey results, the weight of 1080p also aligns with the weight of GPUs in use that are focused at 1080p as well, also CPUs that are well suited so overall an average system on Steam is more aligned to 1080p because that's what gamers are mostly willing to budget for.
If hardware was cheaper, then we'd see 1080p take a back seat. Most people are forced into sticking to 1080p I have no doubt by vendors who just keep on increasing prices.
On the flipside people keep on pre ordering rubbish games at high prices so maybe this argument goes out the windows of common sense