Don't most FOSS licenses explicitly allow for redistribution though? So once one person gets itm they can then redistribute it for free or a cost with the original developer not benefiting (directly).
Sure but the end user of this product doesn't know or care about the parts. This matters to those of us in the plumbing business and those businesses that would hire us to do their plumbing.
So every company has the right to charge you for their software but once you acquire it you can use it however you wish.