Agreed. There is truth to the "meet the new boss, same as the old boss" refrain. But part of the "systemic" problem, is the set of rules that prevent anyone outside the D/R faction from having any impact. It's more than just popular momentum. All manor of funding rules and electoneering regulations have been erected in the last century to ensure no third parties ever have a real shot. Regardless of whether a new party would be any different in the end, this allows the existing parties to maintain power in perpetuity, even as they become less and less responsive to the people they represent.