DDoS tends to be monetised as DDoS-as-a-service. Taking down "significant" services is good advertising. Either that, or they plan to extort the Norwegian government.

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just_some_user a day ago | parent [-]

But for such a "proof of power" a short attack which takes the service down once is enough, long attacks are not so common and actually require some work from the attacker

	▲	Retr0id a day ago \| parent \| next [-]
		If the attack doesn't last long, bystanders can't know whether it was trivially mitigated by the victim. A shorter attack won't make as many news headlines, either.
	▲	devin a day ago \| parent \| prev [-]
		Unless part of the social proof is that mitigation is more difficult.