Complex sentence: If a customer is only serving a few static HTML pages there most likely will be no effect, but for those who wish to run a high-traffic, professional, or business website an oversold hosting account can be detrimental.
Split into simpler sentences: If a customer has a small, low-traffic site serving static HTML pages there most likely will be no effect. For clients who wish to run a high-traffic, professional, or business website an oversold hosting account can be detrimental.