These anecdotes make me wonder. Has anyone ever installed ADS-B-out or TABS in gliders BEFORE having a near-collision? What were your reasons for taking the plunge?

I know that it is not uncommon to install transponders as a precaution before having a close call, but there seems to be more reluctance to install ADS-B-out and TABS even amongst people have ample disposable income. This is just my impression.