The core team of bitcoin has less core developers if you compare with altcoins.
Main reason is the bitcoin foundation did spend too much on bs party's and salaries.
However the amount of third-party developers building on API's is way bigger for bitcoin. In terms of the future, there is only 1 coin that matters.. BITCOIN.
Are the core team of the bitcon paid. There is also a list of many bitcoin coders, are they paid by the Foundation?