But will the first-promoted Capitalist still be alive when the last-promoted Capitalist finally has made the contribution that finishes the factory? Not only has he been investing throughout the building process, he's also had to fund his Capitalist lifestyle, and all of this without any income during the time.
Also, while at Capitalists, have their spending patterns changed since V1? With Capitalists always first spending their money on consumer goods and only the remainder on investments, you had a situation where effectively the price of supporting a Capitalist's lifestyle was fixed, any extra money you'd give them would go directly to building factories and railroads, and it became (unrealistically enough) almost a no-brainer (and a very gamey one too) to tax them at 0%.
Also, while at Capitalists, have their spending patterns changed since V1? With Capitalists always first spending their money on consumer goods and only the remainder on investments, you had a situation where effectively the price of supporting a Capitalist's lifestyle was fixed, any extra money you'd give them would go directly to building factories and railroads, and it became (unrealistically enough) almost a no-brainer (and a very gamey one too) to tax them at 0%.