Opponents pointed to the high investment costs and the ten-year period before such an investment would bear fruit. Fears were also expressed that the technology might become obsolete in the meantime, leaving Taiwan with factories full of expensive, useless equipment.
反對者卻認為，超大型積體電路的投資額約需百億元新台幣，不但短期內無法回收，成敗也需十年、八年方有定案；加上現在資訊科技日新月異，很難預測屆時這項技術是否會被淘汰，如果判斷有閃失，一切投資將付諸東流。