It would certainly be nice if M.2 SSDs drop in price.
In the long run, I want to go for Gen5 - which is why I am looking to get a new motherboard supporting that (and the few Alder Lake motherboards which have it, these are not an option as they take away PCIe 5.0 lanes from the GPU and are expensive).
But as the PCIe 5.0 SSDs haven't really been released yet, it sure isn't surprising that they will be at premium price for some time. So I am looking at older SSDs to use one as system drive for now (and later as storage drive), and would be nice if there would be more options.
On the other hand, e.g. Crucial P5 Plus M.2 NVMe PCIe 4.0, the cheapest price I see for 1TB, that may still seem expensive when looking at price per gigabyte, but it comes with a lot more speed than what SATA SSDs have. And for me with a modern broadband connection, large storage volume isn't that important, as downloading a GB in less than two minutes makes hoarding data somewhat obsolete when I can download two 100 GB games while I am at work, and so on.