Monero is flying under the radar, and riding on the goodwill towards bitcoin. The regulators are years behind and don't even understand bitcoin yet. By the time the full impact of bitcoin on the economy is known, regulatory regimes are set up, etc. it will be too late to stop Monero. We'll have decentralized exchanges and atomic swaps.
I agree, functioning p2p decentralised exchanges are already here, BarterDEX has successfully done atomic swaps between bitcoin based coins and ethereum, and just recently between bitcoin based and erc20 tokens, that's over 90% of crypto in existence. Once they add XMR atomic swap capabilities it's game over, regulators will be playing catch up for the next decade, torrents 2.0
Centralised exchanges could all be selling user data like Facebook, or handing over to governments all they wanted, and even if anon crypto is banned people are still free to use. The final piece of the puzzle is one government backed crypto compatible with BarterDEX to provide a bridge to forex and other fiat, and it's game-set-match!