Themken: 1TB HDD is more expensive to buy new than an SSD with that size.
Almost no one except the crazy and old school ones are buying HDDs lower than 5 TB anymore. If people want to archive data and are not cheap: 20 TB and more is the new "HDD-Standard". Because a 20 TB HDD got the same price comparable to a PCIE 4.0 SSD with 4 TB, so the HDD got 5 times more space for the same price.
However, if it comes to speed for editing or gaming, the HDDs are nowadays a thing of the past and gone. A HDD is nowadays usually used for archiving huge amount of data (simply backup), so the new role is usually "data-center", not work or game drive.
Time means money, no one can afford to lose time... so in business more speed means more money, so even a high price is worth it, The most valuable thing we have is not money, its our precious and limited time.
To a gamer, it may not matter that much "losing time"; but the bad peformance (stuttering, freezing) may still hurt the gaming experience, at least for most of the gamers, You will always find someone even having joy in term the PC is about to explode... who knows; as long as he can save up his precious money doing so. No offense to those simply unable to afford it, but.... in my mind some small and bad performing SSDs are nowadays almost for free. Simply get a weak performing SSD in the 1-2 TB range for 50-100 USD, and you are good to go. The archive using Setups can be stored on a HDD; just the installs should be stored on the SSD.
Considering the speed, the currently best performing data-center-HDD, Toshiba MG 10, got about 1-3 MB/s random 4k file read (there is not any HDD exceeding it) which can not really become improved by using RAID because in a RAID setup the latency will increase. However, as long as the latency is sufficient for the task (simply IOPS in a simplified manner) it can increase the bandwidth with a good margin. Usually it will affect the sequential and huge file performance a good deal, yet, it will still struggle a lot with small files. As a data-center the issue is not huge because the files should be shaped in a way (for example Setup files) that will not shatter the data in way to much small pieces, thus allowing for a steady and good HDD performance as a way of backup.
However, even huge sequential file read is about 20 times faster on a good performing PCIE 4.0 SSD; no RAID that can practically or realistically be build for a "usual consumer" will come close to that. Maybe somewhere in a tech-labor it might exist but it will not be any cheaper than the best PCIE 5.0 SSD including the required platform.