If Wagner takes Moscow, it's game over for Putler, His only option would be to split the country with him as the leader of the break away region.

Now, the million dollar question, what happens with the nukes? The long range balistic missiles would probably fall into Prigozhin's hands, but what happens with the ones in Belarus? Which side will Lukashenko support? Will he let Putin use this tactical weapons against Wagner troops or hand them over to Prigozhin?

So many unknowns right now.