You are suffering under the common delusion that you should be paid according to your value. Employees are labor and are paid as such. In tech companies that might involve equity but primarily you are the labor. In capitalist society, labor is paid at a market rate vs other equivalent labor, not by value.

Your earning power is thus determined by what the next company is willing to offer. Again, this is disconnected from value.

You can see prevailing wages for established companies at levels.fyi . I've no idea how big "small" is but in silicon valley, middle stage startups pretty consistently pay about $175-$225k plus equity.