"yet did not result in bringing other DNS services backup"
Can you be more specific?
Which other domain names did you try?
Also, I believe some parts of the world were unaffected by the outage.
I would guess a large majority of GoDaddy customers would not even know this outage occurred. They are "casual" domain name registrants and in some cases "casual" website operators. They registered some names and then never did anything with them. Or they operate a website but it's very low traffic and they rarely think about it. That is only a guess.