Not quite anyone though, you need the ritual caster feet, you need the ritual and you need the time and money. 4e makes the rogue ferreting out the info the "old fashioned way" or even better having the party do a skill challenge to ferret out the info a viable, usable option as opposed to a secondary backup for when the wizard can't.
So the wizard is in the same scenario you described as being the one who can outshine the rogue using rituals?
I'm a bit confused. You say it was bad that a 3e wizard could outshine a rogue by using spells, I then said that anyone in 4e could do the same, and now you are saying that not anyone in 4e will do it because there are some buy in costs so it's probably going to be the wizard doing it anyway. You then add that a skill challenge (instead of just a spell) can now be used to outshine the rogue as something that's supposed to support the argument that outshining the rogue is, in general, a problem with 3e wizards.
I have to admit, I'm a bit confused. It sounds like you disagree with just one party member being about to poach in on the "realm" of another party member, but you're all for all party members being able to poach into the "realm" of another party member.
And that still kinda sidesteps that the 4e wizard will probably still be able to outshine the rogue in the ways you didn't like in 3e (although it may take 10 minutes now).
I'd be curious to see how many non-wizards (classes that don't get the ritual caster feat for free) actually bother with it. My educated guess would be not that many, especially if there's a wizard in the group who has it. In other words I don't think the ability of non-wizards to take and use rituals only marginally increased the effectiveness of the group, so I bet it's a non-issue.
So the main increase in utility and creativity of rituals in 4e (the ability of anyone to get them) will probably never actualize because most parties will simply rely upon those classes that get the ritual caster feat for free? That looks like another strike against ritual creativity.
In my experience, it was a rare wizard who didn't have enough spells (on scroll or otherwise) to not be prepared for most situations. Certainly the times the rogue was barely effective (graveyards, against prepared wizards, underwater, etc.) seemed to significantly outnumber the times the wizard was barely effective.
It came down to how many spells the wizard had access to. Since there were so many spells, the chance of a wizard having the right spells to be prepared for most situations in a "disruptive" mannor came down to the frugality or liberalness of the GM in providing access to those spells. This is exactly the same as providing access to magic items. Those with more magic items are more prepared (in general) than those with fewer. If a GM was not treating spell access equal to magic item acquisition - well, there's your problem...
The characters can only do the same things if the players choose to focus them to do so, and give up resources elsewhere (at minimum a feat, plus the cost of buying and using all those rituals). This has interesting consequences, If the players all focus on rituals, is the rogue going to do less well at his job because he didn't take a feat that helps with theivery?
Possibly, but would he need to do as well considering that the others in the group would simply outshine him anyway?
I'm just saying that one character's effectiveness (positive or negative really) can impact the need of the rest of the group to be creative; it just doesn't seem that controversial a statement to me.
In my experience, my players are always being as creative as each other, regardless if they're playing fighter, cleric, rogue or thief. They're looking at the entire groups capabilities when thinking creatively, as opposed to only their PC's abilities.
joe b.