Monero is in a long term downtrend vs BTC. It's become sharper as BTC reaches new ATH, it could continue. The bounce back could be aggressive, but won't reach previous ATH.
When BTC reaches 100k, XMR could represent 2% of that value or 2k per XMR.
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100k BTC = 2.5k XMR --- BTC: 40k -> 100k = 125% ROI BTC: $178 -> 2.5k = ~1500% ROI