I can’t read the link but if we just gauge the health of the indie game portion of the industry by how many games are released, I think the only conclusion you can make is that it’s quite healthy. In no small part due to steam which provides discoverability for smaller titles and handles a lot of the technical stuff (downloads, multi-player, even drm) so indie devs don’t have to.

You just seem to have a chip on your shoulder in this department and it’s not clear why other than “billionaires are bad”.