The solid tree, page-8

We talk about all these different markets we are or may be part of, like travel cards for instance you speak of...or Common Mobility cards.

There are so many branches to this tree you speak of. Your tree is also spreading its roots so to speak and will sprout new trees soon. Not to mention the seeds spreading far and wide.
Sorry getting carried away.

The point is we only need, just like trees. Some of these to grow. With the massive numbers involved before you know it...Your tree will be a very valuable forest.