Just lack of skill or talent. Nowadays technology is available almost for everyone. But that doesn't mean that quality increases. To be really good in some cra

Just lack of skill or talent. Nowadays technology is available almost for everyone. But that doesn't mean that quality increases. To be really good in some craft you need to invest a lot of time. Be specialized in any art department means that you have to work for company. But I can say from my experience, that really talented people don't want to work for companies that create commercial products like entertainment films. But if you want to be independent (freelancer), you need more skills to know and therefore be less specialized. It is a vicious circle.