Plaintiff did not allege an actionable equal protection claim based on a “class of one” discrimination.  To state such a claim, the plaintiff must allege facts showing it was treated differently from others who were similarly situated in all material respects.  Because they operate a materially different business model, at a significantly different price point, using new and different technology, the SmileDirect parties cannot establish that they are “similarly situated” to all other licensed dentists and orthodontists in California