Why aren’t pianos frequently used in orchestras?

Question

I have heard that historically composers didn’t frequently include it but, musically and sound wise, is it less suitable or just not needed?

In: Other

Answer 1

Never played in an orchestra but pianos are used quite often, but here’s some reasons they may not be. Pianos are heavy, take forever to tune and most orchestral pieces were composed hundreds of years ago and may have not included one.