high-quality research much more expensive to do, so there is less of it
Good. Fewer polls means fewer people trying to intrude on my time. I don't know why pollsters think they have a right to rudely cold-call people and take up their time - without giving anything back. But it does seem that more and more people are becoming resistant to their interruptions.
If fewer polls means less punditry and less time talking about inconsequential "what-ifs" on TV in the seemingly years long run up to elections, then that can only be a good thing for viewers and all us ordinary people. Sadly the demise of political polls seems to have been taken over by equally pointless and even more trivial time spent debating what political whimsy happens to be trending on Twitter. I guess the political programmes will always find ways to fill up their hours with mindless banter.