Well, if there is a precident than that's a bit different, but still, just cause the "cosmozoans" can do something does that mean the Founders should be able to replicate it? Should they be able to replicate the things a Q can do as well?I think Laas may have gone to warp in "Chimera," but I'm not sure if I trust my memory on that one.
Yes, I think he was pacing the Runabout while at low warp speeds. But we've seen in Trek a number of space-borne entities ("cosmozoans", as Christopher called them) capable of unassisted faster-than-light travel, like the crystalline entity. If the Founders are familiar with such species, then they just duplicate whatever biological properties allow such creatures to organically reach warp.