Raymond, I have a different take on the passage. I believe Babylon will be destroyed at the end of the Tribulation according to Revelation chronology. I am definitely closer to your method of exegesis. Here goes, for what it's worth:
What would be the reaction of the leaders of the nations? Would they rally in support of their people? No, cowardly national leaders and the rich and famous will be fleeing to their well-equipped underground cities and bunkers, leaving the masses to fend for themselves:
15 Then the kings of the earth, the very important people, the generals, the rich, the powerful, and everyone, slave and free, hid themselves in the caves [Gr. εἰς τὰ σπήλαια. Lit. into the caves] and among the rocks [Gr. εἰς τὰς πέτρας. Lit. into the bedrock] of the mountains.
16 They said to the mountains and to the rocks, “Fall on us and hide us from the face of the one who is seated on the throne and from the wrath of the Lamb,
17 because the great day of their wrath has come, and who is able to withstand it?”[1] (Rev. 6:15-17 NET)
Most modern translations prefer “among the rocks.” As will be seen, because of John’s Semitic background, he was greatly influenced by the OT prophets.
εἰς,a preposition governing the accusative: central meaning
with focus on entrance into, or direction and limit: into, to, toward, for,
among .(Danker and Thayer).
εἰς, preposition with accusative, into, in; spatially, denoting motion toward a place, after verbs of going, sending, moving to, toward, into (Matt. 9:7). πέτρα, ας, ἡ literally, living rock, bedrock (Matt. 7:24), in contrast to πέτρος (isolated stone). Friberg.
World leaders and their following will not only hide
among the rocks, they will be sheltering inside them. This is confirmed by the
prophet Isaiah.
[1] God’s wrath is directed at all the inhabitants of the earth, especially the proud and the arrogant (Is. 2:10-12, 17, 19-22; cf. Luke 21:35 NET). The question: “Who is able to stand?” is answered in the intercalation of the next chapter (Rev. 7:9, 14).