There are at least two of these bands out there,
Brit Floyd and Australian Pink Floyd.
They are first rate musicians that put on a typical best-of Floyd anthology concert, with top of the line production values, light show, pyros etc. And the music is indistinguishable from the original band.
Its like the band is franchised out, with several companies doing parallel tours all over the world. Its not unlike what Cirque du Soleil, Blue Man Group and Pilobolus are doing.
I'm not complaining about the quality, it is excellent, but I wonder if this is the future of Rock and Roll. I have a bad feeling about all this.