To keep people playing. Said it 3 times now. The bad games are a side effect, not the intention.
Want to answer my question of why Blizzard was added to a patent you say they don’t use?
Do you mean the bit you quoted? That is just business 101 (even listed as a purpose of the patent).
Or do you mean that the patent isn’t real?
Or do you mean I have no evidence it is used, other than Blizzards name on the patent?