My take is that it doesn’t even matter if Taipei has any card: this is not an economical/technological issue, it is an ideological one. China won’t blink an eye to invade if the conditions are right, because they want to unite their country, it is part of their identity. That might happen if anywhere else, there is a land grab. That won’t be Ukraine, because the US are not involved there, but if the US try to follow up on their claims about Greenland or Panama, Taipei is doomed within a month. As Trump is an adept of quid pro quo, that would mean a good deal for him, so the goal is to extract as much value from Taipei before letting them dead in the water.