Thank you for sharing your thoughts on the revenue model for DeFi protocols and the potential for cross-chain swaps. It's true that wrapping and unwrapping tokens can provide significant revenue for platforms like CUB and POLYCUB, and the ability to perform cross-chain swaps is a valuable feature that can increase transaction volume.

However, as you mentioned, the cost of developing and maintaining bridges/exchanges for cross-chain swaps is a crucial factor to consider. It's important to weigh the potential revenue generated against the costs and risks associated with such projects.

Another consideration is the competition in the market for cross-chain swaps. There are already several established projects offering this service, and it may be challenging to attract users and generate sufficient volume to make the project financially viable.

Overall, it's a complex issue that requires careful analysis and planning. It's essential to consider not only the potential revenue but also the costs, risks, and competition in the market before deciding to invest in such a project.