My question was marked as a duplicate by Did. I was trying to use a different proof involving continuity of measure and monotone convergence theorem for a question I asked before. I specified in the title my approach to the question so I don't believe this is a dupe.
Is it? If so, why? If not, am I doing anything against the rules?
I asked to reopen here in meta, but I got downvotes and no replies.
I edited question trying to explain how my question is not a dupe but then Did did not reply.