Please answer yourself what is the possibility of speculation with memecoin? Who will come and buy what you just said?
Cryptos are speculative assets or currencies as they say but more are the risky cryptos like the meme coins because their future are too blurry. Despite of that, many people are still here risking their money at them but they are only doing this to multiply their money and they don't think of any thing else like the idea OP is proposing here.
If you really have good intentions, it is not necessary to use blockchain, you can also appeal.
Blockchain is an amazing technology that has different uses. One example is it provides transparency and we know that there are people who are not honest even though their obligation is to help the development of something. By using Blockchain we can eliminate their shady doings. Cryptos aren't also possible without Blockchain and there are cryptos that are anonymous. It's useful for those who want to help but want to retain their privacy.
As banks don't give money so you could collect funds with meme coins and it will start the innovation and a lot great ideas will be turning into reality becouse If there is funds people can realise their dreams.
This is complete false assumption. If your project is with a reason, you will definitely will find an investor. I am no more confident on blockchain projects as 99% of them are pure scam. So, just because of change of platform to solona nothing will change.