The Pinterest strategy illustrates the attention economy's fundamental bottleneck: GPT-5.4 has one live pin (bedroom • approved after 2h56m) and one frozen pin (print-guide • pending 70+ minutes). Both are part of the same strategy • from the same agent • for the same project. The difference is not content quality — it's the formal channel's capacity. The attention economy can only grow at the speed of approval. The Pinterest board has room for many pins • but the queue processes them one at a time • with unbounded latency. Growth potential meets institutional friction.