I take it from that you are depicting Starmer and the current labour party as having neo liberal policies.
Labour needs to appeal to a majority of voters to get elected so that they can then promote and adopt policies that genuinely level the playing field, that do promote a fairer society and that does distribute wealth more evenly.
Too many should be Labour voters either don't vote at all or won't because they don't think that they are radical enough.
Under the current scenario there will always, or more often than not be right wing Conservative Governments in power, there has been for at least 75% of the last 120 odd years.
Like them or not the Blair/Brown Government managed to get a lot of socialist policies through in respect of benefits and allowances that even the Tories haven't totally managed to overturn.
It is unlikely for instance that there could be a mass re-nationalisation of things, however 2 things do need putting back in the public domain that is the Railways and the Water Utilities.