All my personal holdings in the stock market have the same basic theme. They are all purchased commission-free, have a long-term history of raising their dividend every year, and are purchased with the intent of supplying ever-increasing dividend income for my retirement years. The Stockopoly Plan was written with this purpose or goal in mind. The Plan itself uses a timing approach for purchases of more shares each quarter, along with the dividend reinvestments.
You need to realize that this imbalance can be corrected by the price dropping (as many claim), rents escalating, or combinations of both. In addition, it may not correct as demonstrated in many markets for over 20 years! So your choice becomes "do I sit on the sidelines" or "do I learn how to invest safely in this fast moving market." This is a personal choice that you have to make in regards to your own personal style.