With the lowest prices for PSA and BGS at $20+ per card (in their +/- 9 month economy turn around time, which is ridiculous), there is no chance to buy, grade, and then quickly flip lower end or speculative cards such as, for example, a second year Donovan Mitchell silver prizm or a, let's say, 10 2017 John Collins Hoops RCs. I am praying that the hobby will see that CSG is equally as good if not better, as it seems they have pulled all of the right levers to start. I've sent in around 400 cards already, single grade service (no sub grades). Time will tell how this pans out for everyone but as of right now PSA and BGS are clearly only marketing to high end cards, which I think is a huge mistake for the hobby in general (but great for PSA and BGS from a short to medium term revenue perspective).
After all, the cards I mention above, for example, could be worth quite a bit down the road, so having a reliable, trustworthy, affordable grading option for those cards is important IMO.