Hey - welcome @freakyfractal and thanks for your post!
It is a long and ongoing discussion whether individual projects started by Gnosis should issue their own token. It certainly is a discussion for Cowswap and GA but the biggest one would likely be the Gnosis Safe.
For the Safe, there is already a somewhat concrete (slightly outdated) proposal: GIP-2: SAFE Token Model
So while the option of introducing tokens for projects is definitely on the table in any case we would make sure that existing GNO holders are properly rewarded. A potential new token should certainly be minted by GnosisDAO and only brought into circulation if it is in the interest of GNO holders.
Alternatively, there are also many potential ways to connect those projects to GNO.
For Cowswap (and the underlying GPv2) there is already this plan: GPv2 Fee Model