It absolutely has. The sales of upright pianos are down, while sales of digital pianos are up. I'd call that replacing.

"Hybrid pianos have gained immense popularity among music lovers. These pianos are increasingly being used to provide keyboard lessons as they combine the electronic, mechanical and acoustic aspects of both acoustic and digital pianos. In addition, hybrid pianos take up limited space and can be easily moved due to their small size and lightness. In addition, these pianos require little maintenance. Temperature and humidity do not affect their configuration due to amplifiers and speakers. They can also be connected to digital interfaces, laptops, iPads and other devices. As a result, pianists are increasingly preferring hybrid pianos, prompting vendors to launch more innovative products that will boost market growth during the forecast period."

source: https://www.businessresearchinsights.com/market-reports/pian...