This quote means that the speaker is in favor of commercializing their artwork. This means that rather than just selling their artwork for a traditional expensive price, they are willing to make it more accessible by putting it on t-shirts. This would let more people enjoy their artwork, even those who don’t have the money to purchase the original artwork. By putting the artwork on a t-shirt, it is more affordable and can be bought by people with a lower budget. It allows more people to be able to buy and enjoy the speaker’s work.