you can easily buy some gold. You can buy grams of gold you know, you don't have to buy lingots of 1kg xD
Grams of gold is not feasible to use as the overhead to handling is far too high. You will lose more on the dealing of the gold then was ever of benefit in having it as stable currency so this is not feasible and its a challenge as an idea. Bitcoin wins this round fairly clear
Yeah he can buy a little amount of gold but it will not profit him any thing as for earning profit some grams of gold are not enough, only rich people can rely on gold for their trade and future profit , for those who cannot afford gold can earn a better amount with bitcoin.
But neither is this true, 'gold is only for rich people'
Rich people always have the advantage of size and the ability to dominate a deal with their superior financing, thats just an advantage they have. Also its useful to an economy to have those who will risk their capital even for personal profit, this element is useful to society and to keep balance it just requires they also pay the price and suffer loss if they are wrong. You cannot save the rich from themselves, it is the competition of capitalism. Sometimes the rich become poor and also poor become rich hopefully though enterprise and work but also just luck :p
The point about gold for rich is wrong because in the modern day we have a variety of ways to distribute gold beyond the pure physical. To carry around a gram of gold would be silly, not recognisable or easy to use and so not fungible.
However we do have the technology to have digital currency and so a link to gold. Ive mentioned before, its very real that your electronic card for buying food can be linked to the current gold price. You will be spending food while buying rice and meat, there are costs as again bitcoin might do well in comparison but bitcoin is not as stable just yet
Right now in less then a month they could make dollars a form of digital gold, its all possible to do but very unlikely as the US government cannot afford to pay 1:1 its debts every day and they would default