Fortunately, many fields also have fully open-access journals and conferences which provide the prestige without making your papers hard to access. (In my field

Fortunately, many fields also have fully open-access journals and conferences which provide the prestige without making your papers hard to access. (In my field, e.g.: the ICDT conference, IJCAI, ICALP, LICS; the LMCS and JAIR journals.) The reason why these haven't completely taken over is because prestige has a lot of inertia, and publisher-run titles retain their prestige (and still attract quality submissions and reviewing). But it's not true that you have to publish with closed-access publishers to get reviews and prestige.