No I am not going to say that spam will be a non-issue in the future. It is something every site that becomes popular has to deal with and it will be here in some form or another as we progress. But I do think we will see less of it as people get used to the site. Why? Because spamming gets you nowhere. Spam can, in an annoying way, get you more views. It makes sense, the more your stuff is on the screen, the better the chance that someone will click on it. Even if by accident. But here is the thing with steemit. Views do not translate into money here. You can use views to sell stuff on your page but in terms of getting money for the post itself, a lot of views does not guarantee anything. You need upvotes and you need them from people with steem power and people with steem power do NOT like spam. They can usually see it a mile a way and it will only, if anything, annoy them. So as people spam, spam and spam and see zero results, they will get tired and try something else or go to another site.
Think of it like an animal that you should not feed because it will keep coming back for more food. This is what spammers are like. If you ignore them and do not reward them, eventually thy will wander off to another car. This means that we can all help by not supporting any spammy comments. The more we work to make quality content and comments and ignore the spam, the more the site should grow in that direction. Even cutting and pasting the same comment takes effort and most people will not continue to do it if it gets them nothing.
So keep working to make the site what you want it to be.
*my upvotes/rep disclaimer: https://steemit.com/steemit/@whatageek/my-steemit-account-where-i-stand-on-bots-self-votes-and-multiple-account