Complex sentence: In the late 1990s, Quark was criticized for having slow innovation cycles, high prices, and a poor response to customer needs, therefore many customers welcomed the release of Adobe InDesign as a less expensive and viable alternative.
Split into simpler sentences: In the late 1990s, Quark faced intense criticism for slow innovation cycles, high prices, and a poor response to customer needs. Therefore, many customers welcomed the release of Adobe InDesign as a less expensive and viable alternative.