For a one off I agree odds are nobody would bother. But consider this disposal is now standard opporating procedure so people would try with what they already have (HAM radio and amateur radio astronomers) and from there work out how to get all these "useless" antennas working together, better noise reduction research.
If parts can start to come together I think we'll find people willing to "upgrade" their gear, our competetive nature of oneupmanship, Universities would get involved, perhaps business sponsorship etc we dont know how far these things will grow, look at where the Internet has gotten to.
I find it defeatist to just assume people won't bother because people actually will even just to prove you wrong

But if the opportunity never exists nobody will ever know. What about SETI@Home and other projects? I happily participated my spare computer time for those. If we dont try, we dont learn. We DONT have to profit before even trying.
Of course existing organisations have procedures that slow things down or destroy workable ideas. But that doesn't bother Musk, he'll make things happen despite the doubters. We have to risk failure to progress.
Happy to leave it as a difference of opinion. The doctors argued blue in the face I would never walk again, but I beat paralysis enough to be able to walk and live independently so some conservative mindsets rub me the wrong way. I've enjoyed exploring this idea but i think we've killed the thread, sorry, I do so much thinking these days my brain sometimes grabs a tiny thread and runs fast and far. No agro intended in any of this. Hhmm, now do NASA have a public forum?