Well, when you are living from the sales of your artwork, then such thoughts certainly come to the fore. It is just a necessity. Sales translate into being able to pay the rent, the power, buy new materials, feed the artist (you) to keep art production going. It is simply a question of sustainability. Otherwise, you're back to taking other jobs to cover costs and the artwork becomes secondary again.

Most happy to converse with you @apolette. =)