What are the reasons for workplace Politics & how it can affect business?

at workplace someone work for some co-workers to favorable and they will not consider the workplace rules and regulations, they thing when they work other to favorable than he can keep his place and archive to top level. at the same time they will not consider the other staff ideas and suggestions. now a days every thing is dynamic even business also. at the top level they offices need to welcome other's ideas and suggestions other wise business cant to improve. when business at the same place competitors will beat the business positions and they will takeover the market place of the business.