Well, I am also having trouble with stating it as a fact, that the reason was they were too wealthy. Might have played a role later, but that is not clear to me from what is stated on wiki:
"The massacre began during Memorial Day weekend after 19-year-old Dick Rowland, a black shoeshiner, was accused of assaulting Sarah Page, a white 21-year-old elevator operator in the nearby Drexel Building.[25] He was arrested and rumors spread that he was to be lynched. Several hundred white residents assembled outside the courthouse, appearing to have the makings of a lynch mob. A group of approximately 50–60 black men, armed with rifles and shotguns, arrived at the jail to support the sheriff and his deputies in defending Rowland from the mob. Having seen the armed black men, some of the whites who had been at the courthouse went home for their own guns. There are conflicting reports about the exact time and nature of the incident, or incidents, that immediately precipitated the massacre.
According to the 2001 Commission, "As the black men were leaving, a white man attempted to disarm a tall, African American World War I veteran. A struggle ensued, and a shot rang out." Then, according to the sheriff, "all hell broke loose."[26] The two groups shot at each other until midnight when the group of black men was greatly outnumbered and forced to retreat to Greenwood."
So you take issue with the idea that an out of mob that burned down 35 blocks of a mid sized city was motivated by envy and resentment of the prosperous black community.
Instead, you assert it was a mob that assembled to lynch a young man who was arrested for assault after he stepped on the foot of or grabbed the arm of a white female elevator operator when he tripped in the elevator. I guess they got out of hand when there was resistance to their murdering the kid.
Why is that distinction so important to you?
I take issue with the statement "There were too many successful black men" and wikipedia as proof for that. Honest representation of facts is important to me in general.
https://www.neh.gov/article/1921-tulsa-massacre
"After an all-night battle on the Frisco Tracks, many residents of Greenwood were taken by surprise as bullets ripped through the walls of their homes in the predawn hours. Biplanes dropped fiery turpentine bombs from the night skies onto their rooftops—the first aerial bombing of an American city in history. A furious mob of thousands of white men then surged over Black homes, killing, destroying, and snatching everything from dining room furniture to piggy banks. Arsonists reportedly waited for white women to fill bags with household loot before setting homes on fire. Tulsa police officers were identified by eyewitnesses as setting fire to Black homes, shooting residents and stealing. Eyewitnesses saw women being chased from their homes naked—some with babies in their arms—as volleys of shots were fired at them. Several Black people were tied to cars and dragged through the streets."
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"One kid groped another kid" is an insufficient explanation of this kind of violence and looting.