I guess they are trying but... there's still no accurate prediction system or even any real public guidance
I have a friend who edits a lot of earthquake papers and although he points to a field of research related to the ionosphere that supposedly offers some promising data, he agrees that there is an awful lot of 'nothing research' that involves writing papers on past quakes that have already been studied to death and are just a way for academics to look like they are doing something to justify their tax payer funded existence
The problem with the ionospheric research at this stage seems to be too many 'false-positives'
Coming from someone who knows stuff-all, I would have thought the way to go would be to get their heads out of the ionosphere and down into the earth's crust where the action is. Given that the earthquakes result from a build-up of pressure, it would seem to make sense to insert probes into known fault lines and measure that pressure - how hard could that be?