Then why have China not done it, if it was that easy ?
And please do not repeat the same stale line about not wanting to fight 'fellow Chinese'. To start off, the islanders consistently
DO NOT consider themselves Chinese but Taiwanese.
If victory is so assuredly so easy as you claim and even to bet in favor, why not invade and get it over with ? The bottom line is that you do not know what you are talking about. Your PLA leadership have been and still is genuinely apprehensive on what the Taiwanese, not considering the US, can do.
Here is my bet on what
WILL happen if China do decide a military conquest of Taiwan...
- Assuming China bombard Taiwan with surface to surface missiles to soften up defenses, how many would that take and how long ?
- The PLAAF will not be able to guarantee air supremacy over Taiwan. Take the lesson from WW II, particularly the Battle of Britain, even though the RAF was fighting primarily from a defensive posture, enough damages were done to the Luftwaffe that even the delusional Hitler was convinced that his invasion force will not survive the Channel crossing.
- If the US were to get involved, US subs will present themselves enough of a threat to the PLA amphibious force that there would be no way for the PLA to be certain of force survival.
- Mines.
- Taiwan would retaliate with its own surface to surface missiles, complicating amphibious force launching.
- Assuming the PLA decides to launch its amphibious force, Taiwanese artillery have the advantage in that artillery are more numerous, more mobile, and does not take much to disable any amphibious craft. A single 155mm round will do.
https://en.wikipedia.org/wiki/Battle_of_Shumshu
http://usacac.army.mil/cac2/cgsc/carl/wwIIspec/number29.pdf
- Assuming the PLA amphibious force survived the crossing and landed, the remnants of this force will have to contend with fighting against an organized military and Taiwanese guerrillas.
The end result of an determined PLA attack on Taiwan will be that China will be mired in a conflict little different than the US in Viet Nam, Iraq, and Afghanistan, and China does not yet have the wealth to sustain the combat tempo that the US military conducted in those wars.