The Phillies have used many of those players to bring in pieces of what they hope will be their next contending team. Pence brought back Tommy Joseph, and then there were the pieces brought back in the trades of Rollins, Hamels, and former closer Ken Giles.
So the Phillies cannot produce enough runs in roughly 2/3 of their games to even have a chance. They have scored two runs or fewer in 30 games, or more than 42% of the matchups.
Quite simply, this team as currently constructed simply cannot compete.