It was not until very recently that society became so temporally focused, and it has been only for the past few decades in the "information age", that we as a society have tried to transform time...the way it is used, managed, and even simply perceived. No one really worried much about time until the invention of the modern clock in the 17th century, especially with the advent of the pendulum in 1657 thanks to Huygens.
The industrial revolution led to task orientation and labor timed by the clock versus the way things proceeded on a natural rhythm beforehand. Information technology and modern computing devices may still just be glorified calculators, however, they have not only affected our societal norms for the valuation and passage of time, they have actually changed temporality...the way people perceive time. Forget about scheduled appointments and being "on time" for a meeting, we talk about globalization and most of our systems rely on GMT to ensure global synchronicity, and what about GPS and the way it uses time to locate by coordinates exactly where in the world something is at a specific point in time...we even measure projects in "internet time".
I am someone who may arrive late, however, I am also incredibly flexible and extremely efficient. My values come from a different era, where family and a job well done were more important than work and completing "on time and under budget", although I consistently achieve those results while the clock watchers typically do not, if their projects actually succeed, or even complete. This is likely because I do not feel constrained by time or money, but rather by quality, ignoring time and cost and focusing instead on an elegant solution. This almost always results in consumption of very little time and money, because there is no need for rework, which is typically eighty percent of a modern time and money constrained project.
All of that said, there is absolutely no reason that a meeting cannot start right on time without everyone physically present thanks to advances in mobile communication devices and services and the virtualization of nearly everything in the information technology domain. The issue always seems to go back to organizational culture and expectations. When there is a manager that expects an employee to be at his desk from 8AM until 5PM, yet uses mobile technology to enable the manager to contact the employee outside of these hours, there is a serious command and control trust issue, not a time management issue.
On the subject of movies, I can watch nearly any movie I want from the comfort of my own home at any time I choose thanks to Netflix, Amazon, Hulu, and dozens of other services, and I will never have to worry about disturbing anyone in a theater. We have the ability, thanks to modern technological advances, to be the most efficient and least time constrained we have ever been in the history of the world, however, this is not happening because so many people are stuck on the pattern of linear and temporally constrained activity, and in my opinion this is simply because we still have people in this world driven by narcissistic tendencies...they simply want to be in control, regardless of whether this approach is the most efficient or makes the most sense. I think that in most cases technology will simply never overcome basic human nature.