A "corporate conglomerate" is a large corporation that owns and controls several different companies operating in various industries. It is like a group of companies under one parent company. Full definition
The more the mass media come to be controlled by large corporate conglomerates which have broad social interests and world - wide organisations, and which all serve the one economic system, the more this will become the case. (religion-online.org)
The reference is to the conversion of major segments of the industry from independent companies or franchise organizations into subsidiaries or divisions of corporate conglomerates whose principal business is other than real estate — such as MidAmerican Energy Holdings and GMAC, both mentioned above. (realtormag.realtor.org)
Rather than a sequel to the original Mirror's Edge released back in 2008, Mirror's Edge Catalyst is considered a reboot of the series with players having the objective of bringing down huge corporate conglomerates who rule over the city. (lifewire.com)