"Non-interactive site" wtf, do you even know the trickery you have to do in JavaScript files to remotely work outside their intended domains? Or how hard was to create a working playable copy of hundreds of old games? Or how much people you need to handle an ever-growing data storage (e.g everyday bigger than the day before) while making it available over internet?
While the code needs maintenance to adapt to edge cases, it's build once and maintain feature. It's not user registering site that needs support for customers and no need to introduce new features to keep going.
Data storage is also single purpose job. While it needs technical capability to store huge amount of data, I still don't see how 150 people are needed to maintain the archive.
You say as if 150 is a small team but how are they used?
