Why is uploading slower than downloading?
Especially when the files are bigger.
Will the internet ever come to a position where upload speeds exceeds or equals download speeds?
As most of the internet usage for an average home user is spent of downloading off the internet the downstream bandwidth is technically required to be larger than the upstream bandwidth. That is how the ADSL (Asymmetric Digital Subscriber Line is the tech used in home internet connections today) works by design — by prioritizing downloads than uploads. And as the name suggests, it is Asymmetric. So no matter how big your file is, your uploads won’t be faster.
Home fibre internet connections (FTTH) does not have these limitations by the way (unless the ISP deliberately throttles it for lucrative data plans).