What sort of gesture? I tend not to be terribly proactive in offering up such a seat, assuming that if anyone wants to use it they'll make that clear, though I'll give them access with a good grace. Equally, there are some journeys where, as the latecomer, I'll choose not to ask, preferring to stand rather than get someone to shuffle out of my way so I can shoot down and then, ten minutes later, having to do the whole thing in reverse.
Were there folk standing on this train?