When comparing ourselves to Spurs, which for me is a good comparison considering we were both in a race with each other for what, 2/3/4 years at one point, off the top of my head early 10's era? maybe a little later?
Don't forget just how cheap nad poorly run our club has been, both before and since kenright sold. Our stadium will increase revenue loads, through matchday, hospitality, non-matchday events such as conferences/concerts and what not, but ultimately improved on the field performance will boost that revenue as well. It's unlikely, because we know Everton to be a horror show and it feels impossible to compete near hte top, but it's not impossible. We took slow steps forwards with Moyes, and while his time went stale and was probably time for a change, we have self imploded and now are back at that stage that we have to take slow steps again.
Even Newcastle, who now are the richest club, cant do it all overnight, they've taken some big steps quite quickly, but it wont be always be that quick for them.