GamesIndustry.biz - Payday 2 shows how not to change a business model.
"Consider a counterfactual, if you will; a scenario where Overkill,
instead of sneaking in a new business model under the cover of a
misleadingly titled event, had engaged openly and honestly with their
community (however small a sliver of the customer base that "community" may
be) and worked through the reasoning and the plans for the introduction of
new business aspects in the game. Consider a scenario where the company, in
humble acknowledgement of its previous pledges (which would now be broken
and should never have been made), figured out a way to make the new model
work for existing players, so they felt benefits from it, not just an
aggrieved sense of being gouged. It wouldn't have been smooth sailing -
in-game purchase models raise some hackles regardless - but it would have
been a much smoother transition than now, and the immense damage that's been
done to the game's reputation and chances of future playerbase expansion
could have been largely avoided."