The root cause is more fundamental than just inflation. In order to form a new business or expand an existing business, entrepreneurs need capital. Rational investors will only give out that capital if they expect a good rate of return (enough to compensate for the risk of losing the investment and not having that money available for other uses). Thus businesses most grow in order to pay back investors. Otherwise potential investors would just hoard their capital and the economy would never advance.

This is literally Finance 101.