So, for me, working with larger companies has often been very satisfying, precisely because of the ability of bringing critical mass to bear on a given effort.
There is no earthly reason why a solo string instrument or voice, having the possibility to play or sing pure intonation, should want, or try, to be tempered.
A successful artist of any kind has to work so hard that she is justified in refusing to lay down her sceptre until she is placed on the bier.