But Ukraine built that industry after the war started. And the Ukranian conflict is uniquely well suited to drones because of numerous factors which wouldn't apply in say, a fight over Taiwan - where the outcome would more or less be determined by who still had a floating Navy at the end of the day.
No amount of 3D printed FPVs is going to bring down a modern warship - they're unlikely to even get near it (conversely the sea drone threat is enormous - but those aren't civilian assets in anyway, but can be as cheap as "brick on a speed boat throttle").
"the sea drone threat is enormous - but those aren't civilian assets"
Absolutely. Ukraine was able to push Russian surface fleet into Russian ports using sea drones. If Taiwan builds a fleet thereof, the Chinese blockade fleet will face Armageddon.
I saw an interview with a former naval radar guy, who claimed that the natural state of the sea produces so many small false blips that a smartly built sea drone of certain size is basically impossible to distinguish from those.
> built that industry after the war started.
Because for the first year of the war was the "burn down existing cold war era stocks" phase. More importantly, neither side realised the impact that drones would have.
Now that every military has seen years of video clips on Telegram of tank after tank being blown up by $500 drones, the next war is going start with swarms of drones on day 1, not day 400.
"More importantly, neither side realised the impact that drones would have."
The Ukrainians absolutely realized that, and I saw a lot of reports about Ukrainian drone operators in 2022 already. It was just after the Nagorno-Karabakh war, where Turkish-made drones were a significant factor in Azeri victory.
There was something else at play. The supply chain had to be built up, plus the Russians were/are quite strong at radioelectronic warfare. Overcoming Russian jamming was a serious uphill battle.