求翻译：佳能的经验表明，进入壁垒和模仿壁垒（barriers to imitation）有着很大的差别。那些想学习施乐公司业务系统的竞争者不得不付出与施乐一样的进入成本，因此模仿壁垒非常高。但是佳能却通过改变游戏规则，大大降低了进入壁垒。是什么意思？

Canon's experience showed that entry barriers and the barriers to imitation (barriers to imitation) has a big difference. Of competitors who want to learn the Xerox corporate business systems like Xerox and have to pay cost of entry, so the barrier to imitation is very high. But the Canon by changing the rules of the game, greatly reducing the barriers to entry.