Legacy is shaping the strategy and determining the differentiators for the big streamers as they face up to engage in battle during 2020, with Netflix having the upper hand through being well established in key international markets and profitable to the tune of well over $1 billion a year now. The irony of streaming has been that while it has been seen as the future of video cutting the rug from traditional pay TV in the US at least, it has not been very profitable. It took Netflix a few years to achieve profits at all in line with revenues and it is still having to invest most of what it earns in original content production. But its key emerging…