Can you predict the stock market?
Just like the rent-market can have price manipulation, so can the stock-market and any other market. It’s absolutely possible for a trading platform to do this through price recommendations, and it would be illegal.
The two things being compared here are completely different though. It’s not very useful. Whats the real-life stock equivalent to RealPage? Who even rents stocks?
Additionally RealPage is forceful with its price “recommendations”. Imagine if a trading platform forced you to buy/sell a certain percentage of your stocks at their suggested rate, and file an appeal to opt out.