One reason for taking a 50:50 position in DeFi would be for AMM liquidity pools, which make "money" on the AMM fee and also open the door for arbitrage opportun

One reason for taking a 50:50 position in DeFi would be for AMM liquidity pools, which make "money" on the AMM fee and also open the door for arbitrage opportunities on the spread, as well. If you're bullish on BTC, you might want to become a provider for a USD(C)->BTC LP. Assuming the price of BTC goes up, you will naturally end up with more USDC as a result.