Group 1 - Beef prices are threatening the profitability of steakhouses, leading to a 6% decline in Texas Roadhouse's stock price after earnings report [1] - Texas Roadhouse missed earnings expectations, indicating potential challenges in maintaining margins amidst rising beef costs [1] Group 2 - The focus on sustained profitability is emphasized, highlighting the importance of strong margins, stable free cash flow, and high returns on invested capital as key drivers of investment returns [1]