Shouldn't it be easier to produce more quantity of goods for a producer? Isn't it the case that the ease of production is inherently tied to the quantity you produce? Shouldn't it be the case that the more you produce , the more easier it becomes to produce a bit more? I understand why the marginal cost drops for lower quantities but am not sure why it should steadily climb up if the quantity crosses some threshold.
Of course , the fixed costs and variable costs as a result of increase in quantities produced could play a local effect in the increasing marginal cost but I don't see why in general the marginal cost curve seems to be increasing by the argument that it should be easier to produce a bit more when you are already producing a lot.