That makes sense, assuming "people who can only afford $30 computers" are your sole priority. If you also care about, for example, "people who can only afford $40 computers", then a better approach would be to raise prices to match market value and use the resulting profits to increase supply.
As another poster noted, a lot of businesses are basing their product lines on the Pi and Pi Compute Module. To those businesses, the market price can rise well past $40 and completely out of the "hobbyist price range" before it becomes worth it to them to find alternatives. With the difficulty of finding components these days, that "increase in supply" that the increased revenue brings to the Pi Foundation may not come for a very long time.
I developed a pi-based system for a well-known company that now has a few hundred deployed at various sites. I can assure you that they wouldn't blink at $200 each. There are businesses out there redesigning their products because they can't find any at all.
