The square piano would come next
The upright would make the option of having a piano in the home possible.
The 19th century the piano would grow more powerful and also become a primary source of entertainment. Learning to play the piano became part of childhood education. The United States would become a major producer of pianos with Philadelphia, Boston and New York would all be major centers.
As the world of entertainment started to offer more choices the piano started to lose popularity. The 20th century would see a decline of piano music and sales. The piano is still very popular though and found in many public places and homes.