I have worked as a professional accompanist for many years - and I make pull-outs of everything. I copy the music, often reducing it slightly. I then trim off as much of the margins as is piratical and tape the pages together, leaving a hairline of space between them. They fold up accordion-style - and I can string them out across the rack, positioning them not too wide, but with minimal page turns. I have done this for thousands of works in the last 35 years- and then I file them into plastic sleeves, for storage, not for playing.
Piano music seldom has rests or convenient places to turn pages - so this avoids the issue as much as possible. Counting all the sets that my husband (pianist) and I (flutist) also do for cocktail hours at weddings (after one of our chamber groups does the ceremony), we have about 35 sets just of cocktail hour music ( show tunes, vintage standards, Cole Porter, etc.) and each has a dozen to sixteen tunes in it - you do the math. Some of our classical chamber music, and Viennese, also has to be set up this way. And all the choral accompanying I do is usually a one-off, so that stuff gets tossed - but have done hundreds of them.
You can always buy a FreeHand - those stand cost about a grand each where all your music is digitally uploaded. The Kindle and some other electronic readers will also load up sheet music, but their selections are very limited, and the screen is very small for music playing. But I think that is where the future lies - not sheet music at all.