Things that have been successfully-so-far banned before being done (very shallow research, not sure; found w/ gippities and cursorily (ha) sanity-checked):
There are probably several more examples of successful huge bans after warning shots / initial uses, e.g. military environmental modification (https://en.wikipedia.org/wiki/Environmental_Modification_Convention ), and examples of questionable / mostly successful bans, e.g. exploding bullets (https://en.wikipedia.org/wiki/Saint_Petersburg_Declaration_of_1868)
For the banning of these weapons, how much does effectiveness weigh against moral concerns? If usefulness weighs a lot, then these examples won't generalize to TAI.
Unless there are very clear, convincing evidence that TAI isn't controllable with current paradigm, then it will still be perceived as a highly useful tech. (Even if such evidence exists, IMO there's high possibility that they'll just cope harder.)
Biochemical weapons: These are only useful against civilians and pre-modern armies. Modern armies can easily afford equipments to protect against the... (read more)