What kind of adoption? Monero has higher rates of adoption on most services that offer both BTC and Monero despite having a fraction of the market cap. Look to Nano-GPT payment stats as an example.
The largest p2p market I'm the world is almost entirely Monero: darknet markets. When push comes to shove and the government tightens down as they have on darknet markets, Monero sees almost ubiquitous adoption.
Adoption in financial instruments? Loan collateral? Central exchange liquidity? All Bitcoin without question. I know what adoption I prefer, though.