So many false assumptions in this post. As if only 1 miner is trying to mine a block. There is simply no way to know whether you or someone else is going to mine that specific block, it's totally random.

> There are two ways to increase mining profitability: generate more revenue, or reduce expenses.

No. There are more ways. Mining the right coin at the right time and selling it at the right time for example.

Mining has a lot of common ground with investing in the stock market. It's not that simple.