as of many of you know that changing how cryptocurrency protocols works is not easy, like what happen with bitcoin in (2013?) when they made the 0.7 version which increase block size to make bitcoin faster , but all users most update in the same time, users who did not updated will have its transaction not counted in bitcoin core 0.7 blockchain. then whats happen!! most users did not updated which split-ed the blockchain, and the community forced to go back to the previews version of bitcoin core.
nowdays bitcoin still working with its first made block size, but ethereum developed an multi year updating mechanizem that will make it able to handle 100k transaction/sec with new powerful proof of stake mining algorithm, and supporting old versions in the same time.
as for me i was not think that pos is better then pow, but lastly i read i article from vitalic the co-founder of eth about why pos is better then pow, which his article was not really neutral , but it made me re-think about pos and starting researching and discovered that attacking pos with 51% attack is hard like attacking pow, and pos have super less energy consumption add to that they will make eth 2.0 can handle more transaction for next generation.
the only problem i faced that blockchain size will be super high and there is no way to cut it because if 51% attack happen we will need that data to recover eth and also bringing ability to cut blockchain into limited size will increase ability to exploit it because of some complicated things
now with this problem if eth converted to eth 2.0 in next 2 years, and bitcoin developers did not respond fast, you can say bay bay to bitcoin, lightening network will not help much , we need POS , which need changing how bitcoin DNA works what might cause problem like in bitcoin core 0.7v ethereum also will able to support old version of eth 1.0 in the sametime
i think if developers simply send and first update that make bitcoin core refuse to work if it did not updated and then send the new version that support pos , this will force old bitcoin core versions to update, so we can say at least 90% of users will updated there softwares, then we can say we did it
any thought?
sorry for my bad English, i just wanted to give my opinion