Because outside of very specific cases like solar panels, display and LEDs spinning up new fabs seems to be quite risky the investment costs is huge and it seem

Because outside of very specific cases like solar panels, display and LEDs spinning up new fabs seems to be quite risky the investment costs is huge and it seems that TSMC is very much content to make major bucks with fewer customers that are chasing the latest and greatest node. The more fabs they have the slower their node progression will be and the cost of each new node these days seems to be almost exponential.