What evidence do you have that people borrow against assets as some tax avoidance strategy? What are the details of this brilliant, often repeated plan? In particular, where do you get interest rates that are low enough to make it worth it to avoid capital gains even with an asset that's grown 100x over its cost basis (and are you accounting for reinvestment of income like dividends that can't indefinitely defer taxes, creating regular tax lots with higher basis that you could sell first)? e.g. are they getting better interest than SOFR somewhere?