I'm a fan of this mentality. (Though I'd be happier if the government gets a copy of all designs that are mass produced.) I recently had a 10 year old TV die on me and I was 90% sure that I just needed to swap the power supply. If I'd had some more info I could have tested things on my benchtop before trying to track down an identical replacement board. (Though those options were a bit dubious as well.)