To describe the SEALS as a “ground combat force” is to misunderstand what ground combat forces ARE. The SEALS are highly trained specialists who conduct special warfare operations for relatively brief periods on behalf of very high authority in support of strategic and /or diplomatic interests, after which they are withdrawn rapidly in preperation for other assignments. They are not expected to conduct long term operations in pursuit of and destruction of enemy forces or particularly to hold terrain for sustained periods. There are simply not enough of them.
Ground Forces are principally units of infantry armor and artillery that are expected to close with, engage and destroy large units of enemy forces and to hold or deny the use of terrain to enemy forces.
SEALS, despite their incredible virtues, are not expected to nor should they be used for these sorts of missions. It would be a waste and misuse of their unique assets.
Regardless, why not?
Why not? Are they incapable?