A lot of companies fall short in their efforts to take their advertising in-house or clean up their supply chains. It’s a regular complaint among publishers, for example, that advertisers cry foul on issues of brand safety, but hardly change their budgets and spending to address the problems. At the Digiday Programmatic Marketing Summit recently held in Estoril, Portugal, Jellyfish digital strategy director Gawain Owen said the key is to think about people, processes and tools.