Investors buy shares and earn returns through dividends and potential stock price appreciation.You typically can’t lose more than your initial investment with publicly traded REITs.

So, the real estate broker/agent would have to inform the seller of the fair market value of their home, making it much more difficult to earn a profit larger than what a real estate commission would be.  

Your only real question here is how much additional equity can you earn before you sell before the rate resets and before you lose your capital gains exclusion, versus the opportunity costs if you sold and cashed out now.

Similar to what you said I knew I needed cash reserves for our business but didn't want that money laying around in a checking account not earning any interest.For book keeping I recently transitioned from Google Sheets to Stessa. 

If you need to earn more figure out what to do.

While it does not cash flow, you are at least earning money by paying off that mortgage which is approximately 60% principal. 

It went through this process myself and found that it was much easier for me to start my investing career after.

Sports stars earn $10 million in five years, then wind up on skid row. 

That is, can you reinvest the interest you earn at the end of a year?

Even if you give $5k to earn $10k wouldn’t that be worth it?