Appropriate theme

Hello, everyone,

“When people think about the development of cities, rarely do they consider the critical role of vertical transportation. In fact, each day, more than 7 billion elevator journeys are taken in tall buildings all over the world. Efficient vertical transportation can expand our ability to build taller and taller skyscrapers. Antony Wood, a Professor of Architecture at the Illinois Institute of Technology, explains that advances in elevators over the past 20 years are probably the greatest advances we have seen in tall buildings. For example, elevators in the Jeddah Tower in Jeddah, Saudi Arabia, under construction, will reach a height record of 660m.”

[Q] Which is the better one as the theme for this paragraph?;

1) the influence of elevators on building constructions.

2) the effect of vertical transportation on the expansion of cities.

While I think 2) above is better, your opinion would be much appreciated. If none, please propose a better one.

*source;

https://www.researchgate.net/publication/283198314_Tall_Buildings_and_Elevators_A_Review_of_Recent_Technological_Advances