Most growth problems get diagnosed as a department problem, a talent problem, a budget problem, or a strategy problem.
They're definitively a stage problem: your GTM motion was built for where the company used to be, not where it is now. I use the MOVE GTM Operating System (8-Pillar Framework), in collaboration with your functional leadership, to find exactly where that mismatch lives instead of guessing at it.
Each pillar answers one question your leadership team has to agree on, from where you can grow the most to how you keep sales, marketing, and customer success rowing in the same direction. Weak in one pillar, and the friction shows up everywhere else. Find the right one first, and the whole system starts moving again.