make art, make good art, make art that pleases you, make art that pleases the commercial marketplace
make art that pleases others ... it is all the same, but drastically different ...

when someone has their work in a gallery, the gallery owner is a sales person, a contact to current and past customers "collectors:.
when someone starts to collect your "work" they want as much stuff (that is the same) as possible.
if you swerve off the road and start doing abstractions, instead postcard-esqe landscapes
the gallerist will suggest politely that you keep doing what you were doing, because his/her livelihood
depends on selling your work, not on you doing work to please yourself

it is the same as doing commercial work for IBM ... they don't want to see something different,
they want the same thing you showed them before ...