Have *YOU* ever tried setting up classic rituals? Everything's going well with everyone in their matching robes and masks, and just as the Grand Priest is finishing the ritual to summon a Great Old One the hero swoops in and steals the book, or breaks the pentagrams and unleashes something that slaughters the worshipers too soon and the wrong kind of hell breaks loose.

That's why they need to be more discreet about it. Once the company is large enough, the CEO organizes an all-company meeting to discuss the future goals of the company. Everyone wears the free matching GOO Limited t-shirts that they handed out (they're always a bit too long), the CEO starts giving the usual speech about synergy and growth (while for reason wearing a weird hat), and during the usual company sing-a-long where everyone just reads off the screen (because nobody actual remembers the song), suddenly the words on the screen get weirder and weirder, and your workers start starting straight ahead and chant in unison. Finally you complete a ritual without the heroes getting in the way, since nobody but the Grand CEO Priest knew about it this time.