Yes, I think it's fair because Todd knew what he was agreeing to when he signed up to play in the NFL. The NFL plays its players, including Todd, a lot of money. In exchange for that money, the NFL owns the likeness of the players. Todd should have followed the rules and he wouldn't be in this position.
Of course the indefinite suspension of Todd Gurley for the suspicion of profiting on his own likeness is fair. Multiple news outlets are debating this but the suspension he received is neither uncommon or unexpected. These rules are there for a reason and in any circumstance where a player violates these rules a temporary, or indefinite, suspension takes place untl the facts can be sorted out. Without these indefinite suspensions players would have no reason to follow these guidelines other then a strong moral compass or a basic respect for the rules. These rules have been set forth to maintain equality to players, fans and collectors alike and to feel that this circumstance is unwarranted or unfair is ridiculous.
While I may disagree with the rule for college athletes and their images and jerseys, that doesn't mean that you can break the rule without consequence. He should not have done what he did even though it may be unfair. Fight to get the rule change instead of breaking it.
There has been no official evidence to suggest that he really did accept money, just like there was no evidence in the Jameis Winston sexual assault case. The way it should work is the player should be innocent until proven guilty. The investigation could take some time and he could miss a lot of games for something he may not have done.
On one hand, the NCAA certainly has the right to institute certain regulations regarding the behavior of its players. Yet from this incident, it's apparent that the process by which they investigate possible transgressions is deeply flawed. At this point, all we know is that Todd Gurley is believed to have possibly accepted money for use of his likeness, a violation of NCAA rules. Yet before the investigation has reached any degree of certainty, Gurley is suspended outright. If the accusations prove to false, how does the NCAA propose to make up for this injustice? By that time, their ruling will likely have already had an adverse, possibly disastrous effect on the ambitions of one of the top 15 teams in college football. How is that fair?