It is true that the price of panels have dropped drastically and there is still some room to go.
The price of panels have come down so much that it is not the most expensive part of a solar system. In recent years the rules have changed and the installation cost have gone up by more than the price of panels have come down. We have had to add arc fault protection, rapid shutdown, squirrel guard and other equipment for compliance reasons. This has added thousands of dollars to the price of an install.
Other changes such as anti-dumping laws and increase import fees have made Canadian panels more expensive than in the past.
So, while the price of panels may go down, it doesn’t mean it will get cheaper to install.