You mean, not being a site that can tolerate the load when linked from a popular link sharing site.

I used to run a small host many years ago. I quickly got out of the business.

There are three classes of people still using shared hosting:

1. Those who know the game but to whom it really doesn't matter: they have little content and/or it is of such niche interest that they are not going to be anywhere near the limits associated with "unlimited". They are aware of the game and using a shared host is either habit or just the quickest way to put the files.scripts out there. They have little or no budget - as soon as they need to pay anything they'll switch to a VPS (but can't be bothered running one right now as they don't need to immediately).

2. Those who don't know any better and who have bought into the marketing of the other hosts. They will expect you to provide the same (or more) for the same (or less) that the other hosts are promising and when you tell them that you can't they will be disappointed, sometimes incredulous, even occasionally offended (as if you telling them it is not possible to make money that way is insulting, i.e. telling them their expectations are wrong is tantamount to telling them they are stupid).

3. Those who know the game full well are and playing it to the max. They've already been pushed off several hosts for using too much of their "unlimited" resources and fully expect to get pushed off yours at some point too (though they'll still kick up an almighty fuss when it does actually happen).

Class 1 won't spend any money, class 2 and 3 will want to pay very little and will eventually try to kill your business via bad reviews when you let them go or otherwise don't give them what they demand.