Short version: They killed it because of "Loper Bright" which killed the Chevron Deference.
In other words: Until recently, US executive agencies were given a lot of leeway in creating regulations that align with their mandate from Congress. This leeway was struck down by the Roberts Supreme Court, insisting that courts can reign in executive agencies and keep them from operating with a broad mandate.
This court doesn't say Net Neutrality is bad or unconstitutional. It says that, under the new precedent set by the Roberts Supreme Court, the FCC does not have the authority it claims to have in regulating ISPs in the same way as a phone company.
If Congress were to pass a law that said the FCC had the authority, or that net neutrality should be instated explicitly, it would happen.
In other words: Until recently, US executive agencies were given a lot of leeway in creating regulations that align with their mandate from Congress. This leeway was struck down by the Roberts Supreme Court, insisting that courts can reign in executive agencies and keep them from operating with a broad mandate.
This court doesn't say Net Neutrality is bad or unconstitutional. It says that, under the new precedent set by the Roberts Supreme Court, the FCC does not have the authority it claims to have in regulating ISPs in the same way as a phone company.
If Congress were to pass a law that said the FCC had the authority, or that net neutrality should be instated explicitly, it would happen.