I think this is just an unavoidable problem with any media creation, especially interactive media. It gets even more unavoidable the moment you start employing voice actors as opposed to just using texts.
Take Baldur's Gate and Elder Scrolls Morrowind where there is no spoken dialogue. The writers could go wild in them, give each character long lines and it would not be a problem.
That is not the case now.
Perhaps in the future, with the advancement of robots and speech technologies, we might arrive at a stage where we can just use robots to record voices as opposed to voice actors. Then the whole process might get cheaper and we will see longer dialogue and less cut.
Not hating on voice actors or anything, they do awesome work but in the future it is entirely possible to envision a robot designed with the sole purpose of imitating multiple variations of human vocals and using them to create its own unique voice that does not sound too synthetic.