More and more of the Taiwanese economy is connected with the mainland. There are more and more exchanges taking place. There's no reason to doubt that over a period of ten years or so, or maybe more, the conditions of life on the two sides of the Taiwan Strait will become more comparable, and the dialogue on the political level therefore easier.
Diplomats operate through deadlock, which is the way by which two sides can test each other's determination. Even if they have egos for it few heads of government have the time to resolve stalemates, their meetings are too short and the demands of protocol too heavy.