Well no, because the absolute size of the starting figure also affects the percentage increase. Proportionality =/= the same percentage when the starting figure is hugely different-- unless you're aiming for perpetual exponential growth, which is absurd and unachievable.
A number increasing by a percent is the same as than number multiplied by 1 + that percent. So profit increasing by 3% is saying the new profit is 1.03 times the old profit. So we take the equation below to start
Profit = Revenue - Expenditure
P = R - E
Then multiply by 3 unknowns
Both profit and revenue increase by the same amount, X. Expenditure changes by the amount Y
P*X = R*Z - E*Y
But we know two are equal already, so
P*X = R*X - E*Y
Substitute in the first equation for P
(R - E)*X = R*X - E*Y
Multiply across parentheses
R*X - E*X = R*X - E*Y
Subtract R* X from each side
- E*X = -E*Y
We know expenditure is a positive real number, divide both sides by -E
X = Y
If revenue and profit increase the same percentage, expenditure must have also increased that same percent.
Look, the fact of the matter is, when a company is making hundreds of billions of dollars in profit every year-- and ever-increasing billions of that are going to shareholders-- they can afford not to increase prices above inflation. They're choosing to do so. You know this.
How would you feel if someone told you that you make enough already and should just never ever get a raise bigger than a cost of living adjustment?