Yes and no. For example, production of Soviet-compatible ammunition is restored in some NATO countries. However, production rate is not high enough to have parity with RF. IMHO, Ukraine should capture Russian stocks in Transnistria to match RF stocks. Taiwan has no such option. Moreover, Taiwan sea routes can be easily interrupted with sea mines. If the war will start this year, then it's too late to bump up weapon production.
The Ukraine war has demonstrated you don’t need parity in shells. A dozen or two HIMARS turned the tide against hundreds of artillery pieces; mobility, range, and accuracy mattered more than being able to send hundreds of shells in a general direction.
While we’re comparing Ukraine and Taiwan, Taiwan has significant defensive advantages; tougher terrain, no land border, and they’ve been fortifying for decades. Even river crossings in Ukraine are fraught with peril, let alone an ocean strait.
