I have several answers for this.
The first is that the sampling is faulty. Of course we have one living planet out of nine, but that means nothing. The very fact that we can observe shows that we have a living planet, and, of course, there are a few others nearby. Let me put this another way. You see a picture of a diamond in a bucketful of coal; now do you think there is a diamond approximately for every bucketful of coal? No, but do those that don't have diamonds in it get pictured? No, they get used for fuel. The reason your sampling is faulty is the very reason that you have a sampling at all.
The second is that most of these stars are many, many, many lightyears away. No communication (short of telepathy, possibly) could reach here in a reasonable time, and they should have sent us the communication when mankind has not even existed yet for us to get it now. Also, even the light of the very stars is so faint from all the space dust and whatnot that it crossed that it takes all sorts of scientific equipment to tell what sort of a star it is; if, in the orbit of such a star, there was someone on a tiny, faraway planet sending us a tiny, faraway signal, what would we get?
The third is that we wouldn't have a way to understand it. Maybe they are sending us signals, but we don't have the senses necessary to hear it, and we can't interpret it anyway because they think differently. Many animal species are social and communicate with each other, but humans don't very well understand even that, although they are earthly and rather similar to mankind.
We see a certain part of the spectrum, and percieve the two ends as "reaching around" (I mean that violet fades into red again). Then what do those who see different parts of the spectrum see? Do they stretch this same colour pattern over whatever part of the spectrum they see? Or... does one end somehow continue in some... other unknown colour? Do the two ends still "fit together"?