I don't think people really believe it, but Devin and the guys in both SYL and DTB really have nothing to do with booking tours, or deciding where tours go. This means they have no say as to what countries, cities or venues are played.
Those decisions are made cheifly by the booking agent that works for the label (in the case of SYL - that would be Century Media, and in the case of DTB - that would in most cases be Inside Out) and collaboratively with the promoters.
It's a sad fact, but most tours lose money. This means that the booking agents must take many factors into consideration when booking a tour. This means they usually stick to regions that are guaranteed to earn enough to cover expenses, planning a tour route that is financially feasible when considering travel costs, and sending the band to cities where the product is readily available and I suppose where they have a good shot at a 'full house' in the audience.
I think one must also consider that both bands are still growing, at least in the eyes of their respective labels, it may be a few years before they have the status that will allow them the luxury and opportunity to get to a position where their labels are willing to take huge financial risks to send them on huge extensive tours. Right now, in general, both bands are choosing to take on supporting roles on tours that have already basically been pre-booked for fellow artists. The only decision that they have to make is 'is the timing right and do we have the budget'?
That being said, brand new opportunities are presenting themselves for both bands everyday, and both bands have a momentum and fanbase that I think are enviable. I don't think it's out of the question that both bands will have many more opportunities of all kinds falling at their feet in the near future.
Finally, i think it's also important to consider that - as anyone can see, Devin is an extemely busy person. He puts out so many releases that I personally find myself dumbfounded by his energy and perseverance - but on top of that, he also keeps himself busy with producing.
So I know that he has to take his own scheduling and the schedules of Byron, Jed, Gene, Will, Brian, Mike, Dave and Ryan (who are also very busy with their own respective projects) into consideration when deciding to take on a tour or not.
All in all, I would bet that each one of the guys like getting out and playing... and would consider getting the chance to play for and meet audiences and members of the fanbase all over the globe is a dream and a blessing.
But I think everything considered, it's a bit of a daunting task - and all in all, the bands get themselves out there to the best of their current abilities.
'sweet candy...
just give me some sweet candy...
you made me feel oh baby...
you think you're all *****'