Pretty sure there would be a number of EU states who'd happily pump some money in if the EU were to mandate the ECB to (incentivise intermediary banks to) buy their corresponding long dated sovereign debt cheaply to fund it.
Perhaps, but in the same breath, from the limited things I've seen and heard, they're extremely reluctant to take any risk with these types of funding schemes when disbursing, so unless it's tried and tested it's not getting off the ground i.e. it's unlikely to lead anywhere considering current state of market.
I mean we can barely get EU to host with EU providers. Nevermind something so speculative.
There's potentially a virtuous circle of increased EU tech investment and increased EU tech provider adoption but given the risk aversion sclerosis that affects the european private investment community this does need to be government led. I'd agree the US private debt fuelled $1Tn build out is mostly unsustainable but when you look at what China was able to achieve with govt support on a ˜120bn AI sector investment it behoves the EU to take a stand, the first 100bn is probably the least risky.