Nah, there's a fair few examples of companies releasing games for free once they were past their viable lifespan. id Software & Parallax Software had a habit of even putting out the source code for their games...having an interesting effect of extending the lifespan (people are -still- making Doom variants)Let me think. The last time a company gave me sth for free was: NEVER
That said, I don't think putting RO1 out for free will do TWI any favors. It's quite old, and looks it, and assuming there's actually anyone still playing RO1, I'm not sure they'd like the brief influx of freebies. The time to do this as a marketing stunt would have been a month before RO2 released.