PG did not claim that "TSMC received 30% to 40% subsidies from Taiwanese government to build a new fab in Taiwan". Here is what he said:
Gelsinger argued that the Taiwan and Korean governments are providing massive subsidies to support local chipmakers.
"How do you compete with a 30 to 40% subsidy? Because that means we're not competing with TSMC or Samsung, we're competing with Taiwan and Korea," he said. "The subsidies in China are even more significant."
He did mention 30...40% but it's not clear what specifically he referred to. The numbers are probably wrong either way but one should not to compare FAB costs to Taiwan government budget just based on this statement.
I jus watched the Fortune interview again. It's very clear that Pat was claiming TSMC got 30% - 40% subsidies (and so did Samsung). There isn't any ambiguity at all.
It's starting around -2:15 in the video. The interview host even tried to confirm it with Pat to see if they (TSMC and Samsung) are already getting the 30% -40% subsidies, Pat answered: "Today".