People follow conventions because they are familiar. They see no need to 're-invent the wheel'.
However, not everything we have in modern society is viable.
Look around you.

The legal system, education, politics... does any of it really work? Be honest.
Computers are useful. But are they really all that good? Have we achieved the paperless office?
Do they really save us any time?

There may be an accepted way of doing things, but that is not the only way.
If you are smart, you will consider the nature, character, purpose, essence of what you are undertaking.
You will re-assess its validity.
Explore options, variables, alternatives. Adapt, change, improvise.
Take nothing for granted. Re-invent the wheel. Only this time, improve it.