I'm currently facing the same dilemma as an indie developer working on a data analysis/data visualization product. Companies like Tableau and co can afford to squeeze the juice of indie developers by offering similar featured products for free. I try not to get discouraged though. I think the field is really large and there are quite a ton of ways to make inroads these days but I think it's also important to play in large enough markets, so better to play in the $120bn+ data analytics market than some $100m market with one well-nourished, fast moving white shark.