Exactly this. To actually visualize the sheer scale of the VRAM wall we are hitting, I recently built an LLM VRAM estimator (bytecalculators.com/llm-vram-calculator).

If you play around with the math, you quickly realize that even if we heavily quantize models down to INT4 to save memory, simply scaling the context window (which everyone wants now) immediately eats back whatever VRAM we just saved. The underlying math is extremely unforgiving without fundamentally changing the architecture.