I am glad you replied my comment, thanks for doing this.

private companies that supply equipment and services to the big national companies have to apply a good marketing philosophy in their sales, because due to low oil prices many of those services and equipment that were purchased in the past may no longer be available today, that is what I mean.

Truthfully, i guess there is little to how long oil will be relevant to the world. Truthfully, for now marketing might be a saving grace for companies that supply services and equipments for oil companies but this will not last for long as a lot will have to start diversifying and improving according to how technology is moving.

I am talking about 50 years from now were oil will become obsolete at that point, what will be the need of marketing a service or equipment that is going into extinction gradually. What is the need of marketing a typewriter in this decade when the blockchain technology has even overshadowed the internet boom age.