> Most of the core devs of Bitcoin are strongly opposed to increasing the blocksize to 8mb
2/5 of the core devs support increasing the blocksize, and of the remaining 3, at least 2 have vested interests in companies/technologies outside of core bitcoin that could stand to benefit from smaller blocksize, eg Blockstream.
You got that backwards, one of the two, Mike, suggested to that they should spend some time working on payment channel and improvements like lightning and since they though it was a good idea they did.
Blockstream has to benefit from blocks as large as possible without losing decentralisation and security properties, like everyone else.
2/5 of the core devs support increasing the blocksize, and of the remaining 3, at least 2 have vested interests in companies/technologies outside of core bitcoin that could stand to benefit from smaller blocksize, eg Blockstream.