Anon,
Canadians pay both provincial amd federal taxes. When looking at equalization, the intent was to give provinces with less fiscal capacity the ability to provide social benefits comparable to provinces with a higher fiscal capacity. This started in 1957. Alberta received equalization payment in 1964-1965. Quebec in the other hand, whose hydroelectric industry remains exempt from equations to determine equalization payments/receipt has received equalization every single year of the program. Not all provinces in this country are created equal.
While Alberta has maintained a high fiscal capacity and has not hesitated on doing what we can to maximize it, other provinces have done everything they can to minimize their fiscal capacity amd thus remain beneficiaries of the equalization program.
Beyond equalization payments, Alberta contributes more to pension plans, employment insurance and many other federal social programs since salaries and earning capacity is higher here than in other provinces. Alberta also has a younger population.
Since 2014, Alberta had been in a recession and between then amd now, the attacks on the major industry (Oil & Gas) have been relentless. Attacks have been coming not just from foreign entities, but from our federal, provincial and even municipal governments. In spite of this Alberta continues to pay the lions share into federal social programs.