Joanna Barwick has self-archived her doctoral thesis, "Where Have All the Games Gone? An Exploratory Study of Digital Game Preservation," in the Loughborough University Institutional Repository.
Here's an excerpt:
Investigating the relationship of games to culture; reviewing current preservation activities and drawing conclusions about the value of digital games and the significance of their preservation were the study's objectives. These have been achieved through interviews with key stakeholders—the academic community, as potential users of collections; memory institutions, as potential keepers of collections; fan-based game preservation experts; and representatives from the games industry. In addition to this, case studies of key game preservation activities were explored.