A tweet from Marshall Breeding points you to the most recent issue of Library Technology Reports, Volume 56, No. 8 (November-December 2020. The journal issue page notes "This issue of Library Technology Reports offers an in-depth analysis of the vendor and product environment in libraries over the past thirty years. Mergers and acquisitions have accelerated in the past decade, yet the pattern of maintaining products has nevertheless presented libraries with options and a competitive environment. The report draws extensively from data on vendors and product implementations."
The recent issue of Library Technology Reports I authored is now available from ALA TechSource:— Marshall Breeding (@mbreeding) November 23, 2020
Consolidation of the Library Technology Industry
an in-depth analysis of the vendor and product environment in libraries over the past thirty years. https://t.co/geOqVWL24f pic.twitter.com/pU7sZkRPRN
Note that the full text is paywalled. Only subscribers may access the content here.