Since there is an obvious barrier of entry for anyone trying to beat you once you’re established, you won’t have to worry about having competitors “buying” their way to the top. Their only option is pay per click ads, but then again, it isn’t the same as getting a higher position on the SERPs. Again, this is assuming that you took the right steps and were patient enough to solidify your place in the top search results. 
The Methods and Tactics: You know that a lot of your clients look for idea online. So you determine to reach people where they are. You will show them all the amazing and creative things they can make with what you sell. You also want to reach people in all steps of the project and buying cycle. This means that you will want to have content for the project conception, idea gathering, planning, purchasing, and creating.
Well, yes and no. Sure, you can get hit with an algorithm change or penalty that destroys all your traffic. However, if you have good people who know what they are doing, this is not likely to happen, and if it does, it is easy (in most cases) to get your visits back. Panda and Penguin are another story, but if you get hit by those it is typically not accidental.
Now, it is not that these sites are not interested in Google users. In fact, they have hired us to help them increase their share. However, they are getting so much traffic from sites like Facebook that it seems there is less urgency about attracting this traffic and less willingness to change the site to meet organic standards. Not long ago, sites would urgently and unquestioningly abide by Google’s standards to court that traffic.