How to get the Cinematic look
There are a few important things to consider:


Lighting is perhaps the most important aspect to creating a filmic image. A lot of filmmakers like to use natural light such as Innaritu on The Revenant. I remember from the BTS that they had maybe 2 hours a day for a week or so to film the 3 minute scene because he only wanted to use natural light. In the studio, however, there are a whole slew of LED lights, fresnels, bounces, softboxes, diffusion, .etc. all set up to make the scene, and the actor look perfect. Almost every angle is thought of, from the lighting of a plant in the background to the color temperature of each light. This is a massive undertaking, and I wouldn’t be surprised in any given scene of a blockbuster movie you will have upwards of 100-200k worth of lighting working on set.
Dynamic range/camera. More and more, directors and cinematographers are opting for using digitial cameras because of their epic post production workflow and there easy integration into vfx. Cameras like the Arri Alexa and the Red Epic can record up to 18 stops of dynamic range. Take the Sony A7Sii for example, a rather pro-sumer grade camera used in a lot of indie productions, with only ~11 stops of dynamic range it is miles behind the Red in terms of the latitude one can get in post-production. This latitude, or the ability to adjust the exposure of minute details to larger troublesome areas such as a blown out window is why dynamic range is so important. Naturally, in order to get the most out of a cameras dynamic range, blockbuster films typically record in logarithmic formats. Arri and Red cameras can record in a RAW format (sensor data, rather than processed sensor data is recorded) which is just like DSLR raw where exposure and color temp (among other things) can be altered after the fact without loss in quality.
Color grading/color correction. Dynamic range would be almost useless if it weren’t for a skilled hand behind the knobs adjusting each and every aspect of the scene to perfect exposure, color temp, .etc. Using power windows with track masks the colorists can add definition to one side of an actors face, or darken it more to fit an ominous scene. They can color a certain act to be warmer when the actors get married, and then can color the next act to be bluer when they get divorced.
Lenses. Lenses have the power to imbue a certain je ne sais quoi to a scene. Cinema lenses such as those produced by Cooke or Panavision are made to a technical standard that most consumer or pro-sumer manufactures couldn’t economically match. In addition, these lenses all have different characteristics that distort the way the camera, and by extension, the audience, experience a space. Some directors prefer to use anamorphic lenses because it instills a classic cinema-type vibe, and gives the movie a certain look.
Audio. No-brainer. Good audio can make or break a scene. From ADR to using multiple mics on an actor; picking the right mic for the job .etc. a good image is nothing without good audio. Naturally, this audio is mixed to perfection in post.
So in general, if you are a small-producer of wedding films or corporate docs; whatever the case may be. You can take some tips from Hollywood. Focus on lighting. I cannot stress this enough. A 70d can look cinematic if you have the right lighting. Learn about large diffuse light sources, negative fill, bounces, .etc. You may not have a big boy toy such as the Alexa or the Epic, but you can get the most out of your A7S or whatever the camera you may have by spending time doing color grading and learning about how to properly expose for and use LOG. Experiment with different lenses. And of course, don’t let your audio fall by the way side. 
Overally, what makes a blockbuster a blockbuster is the combination of many many different skilled professionals acting in unison. It is unlikely you can economically match the level of a blockbuster film, but you can get close.


** I’ve only focused on technical aspects. If your actors suck, or your setting sucks… well you won’t have a very good video.