I do believe that anyone can learn to play the piano, although I would admit it's harder for some than for others. A lot of it has to do with finding the right teacher though.
What exactly do you mean by you were unable to? People have different ideas of what it means to be able to play the piano.
For classically pianists, it just means you can read notes and play the corresponding notes. I imagine anyone could memorize what notes correspond to what keys and, as long as they are physically capable, be able to press down on those keys. You might not be able to play any arbitrary piece, but I think most people agree that just because you can't play Rachmaninoff Piano Concerto 3 doesn't mean you don't know how to play the piano.
What exactly do you mean by you were unable to? People have different ideas of what it means to be able to play the piano.
For classically pianists, it just means you can read notes and play the corresponding notes. I imagine anyone could memorize what notes correspond to what keys and, as long as they are physically capable, be able to press down on those keys. You might not be able to play any arbitrary piece, but I think most people agree that just because you can't play Rachmaninoff Piano Concerto 3 doesn't mean you don't know how to play the piano.