[sdeframond]

I am a bit puzzled: governments and big corp are pouring indecent amounts of money in developing quantum computers, which main application, afaict, is to break cryptography.

...and this is defeated by changing our algorithms ?

Whats the use in developing quantum computers then?

[contact9879]

The use is all the other applications of quantum computers that aren't breaking cryptosystems

[jmprspret]

three letter agencies have been collecting and harvesting encrypted communications for decades in the event that they can break the algorithms later (in this case that would mean quantum computers)